Page 1 of 56

DOE Review Release 03/16/2022

Bounding Intakes of Exotic Radionuclides at 

Los Alamos National Laboratory

ORAUT-RPRT-0101 Rev. 00

Effective Date: 03/01/2022

Supersedes: None

Subject Expert(s): James M. Mahathy and Richard E. Merrill

Concurrence: Signature on File

Pat McCloskey, Objective 4 Manager

Concurrence Date: 02/28/2022

Concurrence: Vickie S. Short Signature on File for

Kate Kimpan, Project Director

Concurrence Date: 02/28/2022

Approval: Signature on File

Timothy D. Taulbee, Associate Director for Science

Approval Date: 03/01/2022

FOR DOCUMENTS MARKED AS A TOTAL REWRITE, REVISION, OR PAGE CHANGE, REPLACE THE PRIOR 

REVISION AND DISCARD / DESTROY ALL COPIES OF THE PRIOR REVISION.

New Total Rewrite Revision Page Change
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 2 of 56

PUBLICATION RECORD

EFFECTIVE

DATE

REVISION

NUMBER DESCRIPTION

03/01/2022 00 New report to address an issue from the Advisory Board on 

Radiation Worker Health regarding the ability to bound dose for 

exotic radionuclides for Los Alamos National Laboratory energy 

employees from 1996 through 2005 using surface contamination 

survey data, air monitoring data, and personnel contamination 

monitoring to assure that doses for unmonitored workers are less 

than 100 mrem. Incorporates formal internal and NIOSH review 

comments. Training required: As determined the Objective Manager.

Initiated by Michael S. Kubiak and authored by James M. Mahathy.
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 3 of 56

TABLE OF CONTENTS

SECTION TITLE PAGE

Acronyms and Abbreviations ............................................................................................................... 4

1.0 Introduction .............................................................................................................................. 6

1.1 Purpose........................................................................................................................ 7

1.2 Scope........................................................................................................................... 8

2.0 Radiological Control................................................................................................................. 8

2.1 Workplace Controls ...................................................................................................... 9

2.2 Workplace Monitoring................................................................................................... 9

2.3 Worker Self-Monitoring............................................................................................... 11

2.3.1 Portal Monitors............................................................................................. 12

2.3.2 Evidence of Portal Monitoring Use ............................................................... 14

3.0 Contamination Survey and Air Monitoring Data in Technical Areas 3, 48, and 53 .................. 18

3.1 Technical Area 3......................................................................................................... 24

3.2 Technical Area 48....................................................................................................... 25

3.3 Technical Area 53....................................................................................................... 26

3.4 Summary of Technical Area Evaluation ...................................................................... 26

4.0 Conclusions ........................................................................................................................... 27

References ........................................................................................................................................ 28

ATTACHMENT A SUPPORTING TABLES.................................................................................. 37

LIST OF TABLES

TABLE TITLE PAGE

2-1 Table 2-2, LANL RadCon Manual summary of contamination values..................................... 10

2-2 PCM use, 1996 to 2005 ......................................................................................................... 12

2-3 HFM use, 1996 to 2005.......................................................................................................... 13

2-4 Some documents with results of portal monitors .................................................................... 15

3-1 Monitoring data by TA............................................................................................................23

3-2 Monitoring data by year.......................................................................................................... 23

3-3 Breakdown of smear results above lower limits...................................................................... 23

3-4 Breakdown of results above upper surface contamination limits............................................. 24

3-5 Air concentrations above alpha and beta limits ...................................................................... 24

A-1 Smear and air monitoring source documents ......................................................................... 38

A-2 Smear results exceeding contamination limits, TA-3 .............................................................. 42

A-3 Air monitoring results exceeding airborne contamination limits, TA-3 ..................................... 45

A-4 Smear results exceeding contamination limits, TA-48 ............................................................ 49

A-5 Air monitoring results exceeding airborne contamination limits, TA-48................................... 51

A-6 Smear results exceeding contamination limits, TA-53 ............................................................ 52

A-7 Air monitoring results exceeding airborne contamination limits, TA-53................................... 54
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ACRONYMS AND ABBREVIATIONS 

1LSA service area in MPF-7, Room 200

1LTC linear accelerator target crypt, MPF-7 

ALI annual limit on intake

Bq becquerel

CA Controlled Area

CAM continuous air monitor

CED committed effective dose

C.F.R. Code of Federal Regulations

cm centimeter

CMR Chemistry and Metallurgy Research

cpm counts per minute

d day

DAC derived air concentration

DOE U.S. Department of Energy

dpm disintegrations per minute

DU depleted uranium

ER-1 Experimental Area Room 1

ER-2 Experimental Area Room 2

F fast (absorption type)

FP fission product

FP-2 flight path 2

HFM hand-and-foot monitor

HI hazard index

hr hour

ICRP International Commission on Radiological Protection

LAMPF Los Alamos Meson Physics Facility

LANL Los Alamos National Laboratory

LANSCE Los Alamos Neutron Science Center

m meter

M moderate (absorption type)

MAPs mixed activation products

MDA minimum detectable activity

MFAPs mixed fission and activation products

MFPs mixed fission products

min minute

mR milliroentgen

mrem millirem

nCi nanocurie

NDA no detectable activity

NIOSH National Institute for Occupational Safety and Health
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ORAU Oak Ridge Associated Universities

ORAUT Oak Ridge Associated Universities Team

PCM personnel contamination monitor

PSR Proton Storage Ring

RadCon radiological control

RBA Radiological Buffer Area

RCA Radiological Control Area

RCT Radiological Control Technician

REB room in Proton Storage Ring, MPF-28

RLW radioactive liquid waste

RMI routine monitoring instructions

RWP radiation work permit

S slow (absorption type)

SEC Special Exposure Cohort

SNM special nuclear material

SRDB Ref ID Site Research Database Reference Identification (number)

Sv sievert

TA Technical Area

WBC whole-body count

yr year

§ section or sections
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1.0 INTRODUCTION

On April 3, 2008, the National Institute for Occupational Safety and Health (NIOSH) received a 

Special Exposure Cohort (SEC) petition for the Los Alamos National Laboratory (LANL) in Los 

Alamos, New Mexico. The petition, SEC-00109, requested that a class be added to the SEC for 

service support workers (which includes but is not limited to security guards, firefighters, laborers, 

custodians, carpenters, plumbers, electricians, pipefitters, sheet metal workers, ironworkers, welders, 

maintenance workers, truck drivers, delivery persons, radiation technicians, and area work 

coordinators) who worked in any operational Technical Area (TA) with a history of radioactive material 

use at LANL from January 1, 1976, through December 31, 2005 [NIOSH 2012]. 

In Revision 1 of the SEC-00109 petition evaluation report, NIOSH defined a single class of employees 

for which NIOSH cannot estimate radiation doses with sufficient accuracy. The class included

[NIOSH 2012, p. 2]:

All employees of the Department of Energy, its predecessor agencies, and their 

contractors and subcontractors who worked at the Los Alamos National Laboratory in 

Los Alamos, New Mexico from January 1, 1976 through December 31, 1995, for a 

number of work days aggregating at least 250 work days, occurring either solely under 

this employment or in combination with work days within the parameters established for 

one or more other classes of employees in the Special Exposure Cohort.

The dose reconstruction limitations identified for the specified class period included the inability to 

bound unmonitored intakes of exotic alpha emitters, fission products (FPs), and activation products.

NIOSH [2012] defined “exotic radionuclides” as being everything other than 234/235/238U, 238/239Pu, 3

H, 241Am, and 137Cs.

NIOSH selected the December 31, 1995, end date for the class based on its presumption that by 

January 1, 1996, LANL would have been in full compliance with 10 Code of Federal Regulations

(C.F.R.) Part 835, Occupational Radiation Protection, § 402 and 702, which stated in 1993 [U.S. 

Department of Energy (DOE) 1993, pp. 35, 37]: 

§ 835.402 Individual monitoring. 

(c) For the purpose of monitoring individual exposures to internal radiation, internal dose 

evaluation programs (including routine bioassay programs) shall be conducted for: 

(1) Radiological workers who, under typical conditions, are likely to receive 0.1 rem 

(0.001 sievert) or more committed effective dose equivalent, and/or 5 rems (0.05 sievert) 

or more commited dose equivalent to any organ or tissue, from all occupational 

radionuclide intakes in a year.

§ 835.702 Individual monitoring records.

(a) Records shall be maintained to document doses received by all individuals for whom 

monitoring was required pursuant to § 835.402 and doses received during planned 

special exposures, accidents, and emergency conditions.

The 10 C.F.R. Part 835 rule became effective on January 13, 1994, and required full compliance by 

January 1, 1996 [DOE 1993, p. 9]. 

The 1993 edition of 10 C.F.R. Part 835 [DOE 1993] incorporated the recommendations of 

International Commission on Radiological Protection (ICRP) Publications 26 and 30 for the calculation 

of doses [ICRP 1977, 1979]. In 2007, DOE revised the rule to incorporate the newer 
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 7 of 56

recommendations of ICRP Publications 60 and 68 [ICRP 1991, 1995]. With this update to the 

calculated dose came a change in terminology – the dose of interest became committed effective 

dose (CED). The Energy Employees Occupational Illness Compensation Program Act of 2000 applies 

this later system of dose assessment so it is used for all calculations in this document. Unless 

specified otherwise, the term “dose” in this document refers to the CED.

1.1 PURPOSE

This report addresses an issue from the Advisory Board on Radiation Worker Health about the ability 

to bound dose for exotic radionuclides for LANL workers from 1996 through 2005 using surface 

contamination survey data, air monitoring data, and personnel contamination monitoring to comply 

with 10 C.F.R. Part 835 [DOE 1993]. 

During deliberations after designation of the SEC class for 1976 through 1995, the LANL Work Group 

questioned the ability of NIOSH to bound doses from exotic radionuclides; these include short-lived 

activation and spallation products from the Los Alamos Neutron Science Center (LANSCE; TA-53) 

and mixed fission products (MFPs) in TAs 3 and 48 after 1995. NIOSH maintains that, by complying 

with 10 C.F.R. Part 835 [DOE 1993], LANL monitored all workers with a potential to receive in excess 

of 100 mrem. NIOSH has indicated in previous papers and presentations to the LANL Work Group 

that it does not rely solely on 10 C.F.R. Part 835 compliance for the conclusion that unmonitored 

workers were unlikely to have received intakes resulting in greater than 100 mrem [NIOSH 2019, 

pp. 19–21].

The LANL radiological control program was designed to comply with 10 C.F.R. Part 835 [DOE 1993] 

but with an intended outcome that unmonitored individuals would be unlikely to receive doses greater 

than 100 mrem. The Oak Ridge Associated Universities (ORAU) Team (ORAUT) discusses the tenets 

and requirements of that program in this report with the focus on limiting exposure to nonplutonium 

radionuclides. These radionuclides include exotic radionuclides and heavy elements such as 227Ac, 

237Np, 241Am, 244Cm, and thorium. Emphasis is placed on workers doing routine work, such as guards 

and custodians, and actions taken during contamination incidents. That latter emphasis is 

supplemented with an analysis of data from surface contamination surveys, air monitoring, and 

incidents to demonstrate program effectiveness.

In addition, NIOSH has a substantial amount of internal dosimetry data for LANL workers. These data 

show that intakes for monitored workers from 1996 to 2005 were generally less than 100 mrem, and 

doses for unmonitored workers would likely have been even lower [ORAUT 2009]. NIOSH found no 

evidence that unmonitored workers received doses above the 10 C.F.R. Part 835 monitoring limit

[DOE 1993]. 

During LANL Work Group deliberations, routine work monitoring has been described as monitoring for 

plutonium, uranium, and tritium. Such routine work is defined as work not done under a radiation work 

permit (RWP) and that involved workers such as guards and custodians. After the November 29, 

2018, LANL Work Group meeting, NIOSH and the ORAU Team determined that additional surface 

contamination survey data and air monitoring data were needed to support the position that the areas 

where exotic radionuclides were handled were well monitored for contamination [NIOSH 2018]. Three 

TAs where exotic radionuclides are known to have been handled were selected for review: the South 

Mesa Site (TA-3) containing Chemistry and Metallurgy Research (CMR); the Meson Physics Facility 

(TA-53) containing the LANSCE; and the Radiochemistry Site (TA-48) [LANL 1995, pp. 25, 68, 125]. 

In 2019, the ORAU Team captured some surface contamination survey data and air monitoring data 

from these three TAs for the period from January 1, 1996, through December 31, 2005. These data 

were primarily gross alpha and gross beta air concentrations and swipe surface contamination results. 

Section 3.0 discusses the data from the three TAs, the assessment methods, and the results. NIOSH 

makes no claim that these data are complete. These data were not analyzed using a statistical 
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sampling plan such as was performed in ORAUT-RPRT-0102 [ORAUT 2021a], but rather the goal 

was to produce a qualitative analysis. 

1.2 SCOPE

This report:

• Discusses the LANL radiological control program,

• Uses examples of routine airborne and surface contamination monitoring data from monitoring 

programs in areas where exotic radionuclides and radionuclides other than plutonium were 

handled at LANL from 1996 through 2005 to demonstrate LANL maintained exposures to less 

than 100 mrem, and

• Discusses the use of worker self monitoring with portal monitors by LANL Health Physics to 

screen workers for contamination when leaving contaminated work locations.

2.0 RADIOLOGICAL CONTROL

LANL Health Physics operated a comprehensive radiological control program through the entirety of 

the evaluated period, 1996 through 2005. The program included workplace controls, workplace 

monitoring, radiation worker training, worker self-monitoring, and worker external and internal 

monitoring and RWPs. 

Classification of potential contamination areas follows:

• Contamination Area. Any area, accessible to individuals, where removable surface 

contamination levels exceed or are likely to exceed the removable surface contamination 

values specified in appendix D of 10 C.F.R. Part 835 [DOE 1993], but do not exceed 100 times 

those values.

• Airborne Radioactivity Area. Any area, accessible to individuals, where:

– The concentration of airborne radioactivity, above natural background, exceeds or is 

likely to exceed the derived air concentration (DAC) values listed in appendix A or 

appendix C of this part; or

– An individual present in the area without respiratory protection could receive an intake 

exceeding 12 DAC-hours in a week.

• Radiological Buffer Area (RBA). Intended to provide boundaries to minimize the spread of 

contamination and to limit doses to general employees who have not been trained as 

radiological workers.

• Controlled Area (CA). Any area to which access is managed by or for DOE to protect 

individuals from exposure to radiation and/or radioactive material. 
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2.1 WORKPLACE CONTROLS

LANL incorporated engineering controls to protect workers from both external and internal radiation 

exposure [Hoover 2021a]. These controls were designed to limit potential doses of radiation to 

workers to 100 mrem. Examples of these controls included:

• Facility design, 

• Laboratory hoods,

• Laboratory gloveboxes,

• Hot cells,

• Shielding,

• Ventilation systems, 

• Closed entry to beam lines. 

2.2 WORKPLACE MONITORING

Workplace monitoring was a linchpin used by LANL Health Physics to ascertain the effectiveness of 

workplace controls and compliance with 10 C.F.R. Part 835 [DOE 1993]. By January 1, 1996, the 

health physics field monitoring and contamination control programs at LANL were well established

and formalized with over 60 procedures addressing various aspects of radiological protection as well 

as an established process for tracking and notifying staff of revisions [Rodriguez 1996a,b]. These 

procedures cover program administration, exposure and contamination control, monitoring, 

instrumentation, protective equipment, emergency response, and the as low as is reasonably 

achievable program.

In addition to sitewide procedures, area-specific routine monitoring instructions were an important part 

of the radiological control program at facilities where radioactive materials were handled and stored. 

The survey locations and frequencies helped to define the “safety envelope” for a facility. For 

example, the stated purpose of the ESH-1 / TA-3 CMR Building Wing 2 Routine Monitoring 

Instructions was to provide survey frequencies which are to be used by ESH-1 Radiological Control 

Technicians (RCTs) and Health Protection Technicians (HPTs) in the operation of the radiological 

control program at TA-3 [Costigan et al. 2000]. This document defines the routine monitoring tasks of 

the RCTs assigned to TA-3 and delineates responsibilities. Routine surveys are described with survey 

frequencies ranging from daily to annually. These instructions also specify types of routine external 

radiation surveys as well as air monitoring, which include annual continuous air monitor (CAM) system 

calibration, monthly performance tests, and daily operability checks. LANL published similar routine 

monitoring instructions for each technical area. Additional examples of these instructions for the three 

technical areas evaluated in Section 3 are: for TA-3 [Montoya 2004; Cox and Valdez 2004], for TA-48 

[Costigan 1997; Vergamini 2000] and for TA-53 [Salazar 2005]. LANL Health Physics maintained the 

same level of monitoring across the site where radiological operations were conducted. An example of 

RMI for other areas included in this report is TA-55 radiation monitoring instructions (memorandum to 

UNCI-ESH-1 at TA-55 [Stokes 2000]) used at Technical Area TA-55.

Routine surveys were a primary way in which LANL demonstrated to DOE that radiological operations 

were being conducted in a manner that did not compromise the health and safety of workers or 

threaten the environment [Hoover 2021a]. By procedure, “A surface shall be considered contaminated

if either the removable or total radioactivity is detected above the levels in Table 2-2” [Hoover 2021a, 
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p. 13]. Table 2-2 of the LANL Radiological Control Manual (RadCon Manual) is reproduced below in 

Table 2-1. Further, by procedure, “If an area cannot be decontaminated promptly, then it shall be 

posted by ESH-1 as specified in 10 CFR 835. For area surveys where more than 10% of the total 

number of samples (swipes, smears, or instrument measurements) exceed Table 2-2 values, the 

affected area shall be decontaminated and/or posted accordingly” [Hoover 2021a, p. 13]. Health 

Physics either decontaminated areas of surface contamination or covered them. By procedure, 

routine area contamination monitoring was performed weekly, monthly, quarterly, semiannually, and 

annually [Hoover 2021a]. 

Table 2-1. Table 2-2, LANL RadCon Manual summary of contamination values [Hoover 2021b, p. 4].

Summary of contamination values

Nuclidea

Removableb,c 

(dpm/100 cm2)

d

Total

(fixede + removablec) 

(dpm/100 cm2)

d

Natural U, 235U, 238U, and associated decay 

products

1,000 alpha 5,000 alpha

Transuranics, 226Ra, 228Ra, 230Th, 228Th, 231Pa, 

227Ac, 125I

20 500

Natural Th, 232Th, 90Sr, 223Ra, 224Ra, 232U, 126I, 

129I, 131I, 133I

200 1,000

Beta-gamma emitters (nuclides with decay 

modes other than alpha emission or 

spontaneous fission) except 90Sr and others 

noted abovef

1,000 betagamma5,000 beta-gamma

Tritium organic compounds, surfaces 

contaminated by HT [elemental tritium (tritiated

gas)], HTO [tritiated water], and metal tritide 

aerosols

10,000 10,000

a. The values in this table apply to radioactive contamination deposited on, but not incorporated into, the 

interior of the contaminated item. For purposes of this table only, it is assumed that tritium 

contamination deposits onto the surface but is not incorporated into the interior of the contaminated 

item. This table does not apply to personnel contamination. → Where contamination by both alphaand beta-gamma-emitting nuclides is present, the limits established for the alpha- and beta-gammaemitting nuclides apply independently. 10 CFR 835, Appendix D

b. The amount of removable radioactive material per 100 cm2 of surface area should be determined by 

first swiping the area with dry filter paper or soft absorbent paper while applying moderate pressure 

and then assessing the amount of radioactive material on the swipe with an appropriate instrument of 

known efficiency. (Note: the use of dry material may not be appropriate for tritium.) 10 CFR 835, Appendix D

→ For objects with a surface area less than 100 cm2, the entire surface should be swiped, and the 

activity per unit area should be based on the actual surface area. 10 CFR 835, Appendix D → Except for 

transuranics, 228Ra, 227Ac, 228Th, 230Th, 231Pa, and alpha emitters, it is not necessary to use swiping 

techniques to measure removable contamination levels if direct scan surveys indicate that the total 

residual contamination levels are below the values for removable contamination. 10 CFR 335, Appendix D

c. The “removable” and “total” levels may be averaged over 1 m2 provided the maximum activity in any 

area of 100 cm2 is less than three times the values in Table 2-2. For purposes of averaging, any 

square meter of surface shall be considered to be above the activity guide G if (1) from measurements 

of a representative number n of sections it is determined that 1/n ∑n Si ≥ G, where Si is the dpm/100 

cm2 determined from measurement of section i; or (2) it is determined that the sum of the activity of all 

isolated spots or particles in any 100-cm2 area exceeds 3 G. 10 CFR 335, Appendix D

d. As used in this table, dpm (disintegrations per minute) means the rate of emission by radioactive 

material as determined by correcting the counts per minute (cpm) observed by an appropriate 

detector for background, efficiency, and geometric factors associated with the instrumentation. At 

LANL, the instrument is calibrated so that the meter reading will directly correspond to the alpha or 

beta surface emission rate. A nominal conversion to activity in dpm is possible by multiplying the 

instrument contact reading in cpm by a factor of 2.

e. When measuring fixed contamination during a survey, the active area of the probe used must be 

taken into account. For example, if the active area is 100 cm2 and the nuclide is natural uranium, then 

the 5000-dpm α/100-cm2 limit will apply. For a 40-cm2 probe, 2000 dpm α would be the limit because 

of the reduced active area of the probe.
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f. This category of radionuclides includes mixed fission products [MFPs], including the Sr-90 that is 

present in them. It does not apply to Sr-90 that has been separated from the other fission products or 

mixtures in which the Sr-90 has been enriched. 10 CFR S35, Appendix D

According to 10 C.F.R. § 835.403(a), DOE required monitoring of airborne radioactivity to be 

performed: (1) where an individual is likely to receive an exposure of 40 or more DAC-hr in a year 

(2% of an annual limit on intake [ALI]), or (2) as necessary to characterize the airborne radioactivity

[DOE 1993; Fanning and Keith 2001]. LANL used a hazard index (HI) approach for defining need for 

air monitoring. In general, an HI less than 1 indicated a low hazard potential from airborne 

radioactivity and no air monitoring was prescribed. An HI between 1 and 100 indicated a low to 

moderate airborne potential and general air monitoring was prescribed. Note that an HI of 2 

corresponds to a potential intake of 2% of an ALI. Air monitoring was performed on daily and weekly 

frequencies and included real-time sampling. The LANL radiological control program also used 

continuous air monitoring to identify airborne contamination. The ORAU Team has access to many 

incident records of CAM alarms. CAM alarms allowed LANL to respond quickly to airborne radiation 

areas, which in turn helped to reduce surface contamination and prevented prolonged exposure to 

contaminated areas. 

An analysis of some LANL routine surface contamination and air monitoring results is presented in 

Section 3.0 to help evaluate the effectiveness of workplace controls. 

2.3 WORKER SELF-MONITORING

The requirement for workers exiting areas suspected of contamination to self-monitor was another key 

tenet of the LANL radiological control program in the period of evaluation. Hoover [2021a, p. 13] 

states:

1. Personnel exiting Contamination Areas, High Contamination Areas, Airborne 

Radioactivity Areas, and Radiological Buffer Areas or Controlled Areas established 

for contamination control shall frisk for contamination as required by Article 338. This 

does not apply to personnel exiting areas containing only radionuclides, such as 

tritium, that cannot be detected using hand-held or automatic frisking equipment.

2. Monitoring for contamination should be performed using frisking equipment that 

under laboratory conditions can detect total contamination of at least the values 

specified in Table 2-2. Use of automatic monitoring units that meet the above 

requirements is encouraged.

3. Personnel found with detectable contamination on their skin, personal clothing, or 

company-issued clothing other than noble gases or natural background radioactivity 

should be promptly decontaminated as described in Article 541.

The radiological protection program provided fixed instruments for personal contamination monitoring 

in each TA. Attachment A of the LANL RadCon Manual stated [Hoover 2021a, p. 14]:

1. Personnel shall perform a whole-body frisk [survey themselves] under the following 

conditions:

a. Immediately upon entry into an uncontaminated area after leaving existing 

Contamination Areas, High Contamination Areas, and Airborne Radioactivity 

Areas;

b. As Directed by the radiological work permit, the ESH-1 RCT, or the area exit 

posting.
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2. In addition to the above, personnel exiting a Controlled Area or Radiological Buffer 

Area containing Contamination, High Contamination or Airborne Radioactivity Areas 

should, at a minimum, perform a hand and foot frisk. The frisk is optional if the 

Controlled Area or Radiological Buffer Area exit is immediately adjacent to the 

location where the existing worker has already performed a whole-body frisk.

3. Where frisking cannot be performed at the exit from Contamination Areas, High 

Contamination Areas, and Airborne Radioactivity Areas due to high background 

radiation levels, personnel shall perform the following:

a. Remove all protective equipment and clothing at the exit.

b. Proceed directly to the nearest designated monitoring station.

c. Conduct whole-body-frisk.

4. Personnel frisking shall be performed after removal of protective equipment and 

before washing or showering.

Attachment A of the LANL RadCon Manual stated that personnel should take the actions including the 

following in response to a contamination alarm [Hoover 2021a, p. 16]:

5. Response to a personnel contamination monitor alarm should include the following 

actions:

a. Remain in the immediate area.

b. Notify ESH-1 personnel and line supervision.

c. Take actions that may be available to minimize cross-contamination, such as 

putting a glove on a contaminated hand.

2.3.1 Portal Monitors

LANL maintained a large and comprehensive inventory of instrumentation for monitoring individuals 

and areas in accordance with 10 C.F.R. Part 835 [DOE 1993]. These included fixed and portable 

instruments appropriate for the wide variety of radiological activities at LANL. Portal monitors 

consisted of personnel contamination monitors (PCMs) and hand-and-foot monitors (HFMs). 

Radiation protection instruments were calibrated in house at LANL. Table 2-2 lists PCMs used in TAs; 

Table 2-3 lists HFMs [Hoover 2021a].

Table 2-2. PCM use, 1996 to 2005.a,b

Model HS# TA Building Location

PCM-1B 8505 3 29 Wing 9

PCM-2 6421 3 29 Wing 2

PCM-2 7145 3 29 Wing 2

PCM-2 9995 3 29 Wing 2

PCM-2 6422 3 29 Wing 2

PCM-2 7147 3 29 Wing 3

PCM-2 7143 3 29 Wing 4

PCM-2 7144 3 29 Wing 4

PCM-2 6411 3 29 Wing 5

PCM-2 7150 3 29 Wing 5

PCM-2 6420 3 29 Wing 5
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Model HS# TA Building Location

PCM-2 6419 3 29 Wing 7

PCM-2 7148 3 29 Wing 7

PCM-2 7149 3 29 Wing 7

PCM-2 9999 3 29 Wing 7

PCM-2 6412 3 29 Wing 9

PCM-2 7146 3 29 Wing 9

PCM-1B 8502 3 102 Not available

PCM-1B 8503 3 66 S102

PCM-1B 8501 21 312 Not available

PCM-1B 8501 54 G Not available

PCM-1B 8507 54 1009 Not available

PM-6A 6503 48 RC-1 Not available

PM-6A 6504 48 RC-1 S Hallway

PCM-1B 4868 48 RC-1 Main/North Hallway

PCM-1B 5004 48 RC-1 Hot Cell Area

PCM-1B 5005 48 RC-1 Hot Cell Area

PCM-1B 8508 48 RC-1 Machine Shop

PCM-2 11501 48 RC-1 ARF Entrance

PCM-2 11502 48 RC-1 Alpha Wing

PCM-1B 4867 50 RC-1 Decontamination

PCM-1B 8501 50 37 Not available

PCM-1B 5007 50 37 Not available

PCM-2 6423 50 69 Not available

PCM-2 9995 50 69 Not available

PCM-2 9997 50 1 Main

PCM-2 11503 50 1 Main

PCM-2 11504 50 1 Main

PCM-2 11505 50 1 Main

PCM-1B 4870 53 Proton Storage Ring 

Shack

Not available

PCM-1B 5006 53 Area A West

PCM-1B 5009 53 Area A East

PCM-1B 8503 53 ER-2 Not available

PCM-1B 5010 53 1L Service Shack

PCM-1B 8509 53 M111B / ER-2 Not available

PCM-2 9999 53 PRAD Area Not available

Ludlum 53 PN 1232409 53 ER-2 Not available

PCM-2 6413 55 Not available Station 118

PCM-2 6414 55 Not available Station 118

PCM-2 6415 55 Not available Station 116

PCM-2 6416 55 Not available Station 116

PCM-2 6417 55 Not available Station 116

PCM-2 6418 55 Not available Station 116

PCM-2 11506 55 Not available Station 116

PCM-2 11507 55 Not available Station 116

PCM-2 11508 55 Not available Station 116

a. Source: Hoover [2021a].

b. ARF = Actinide Research Facility; HS# = instrument number prefix; PRAD = Proton 

Radiography Facility.

Table 2-3. HFM use, 1996 to 2005.a,b

Model HS# TA Building Location

HFM-6 7027 3 29 Wing 7

HFM-6 7028 3 29 Wing 4

HFM-6 7029 3 29 Wing 2
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 14 of 56

Model HS# TA Building Location

HFM-6 7034 3 29 Wing 4

HFM-6 7035 3 29 Wing 4

HFM-6 7038 3 29 Wing 2

HFM-6 7039 3 29 Wing 9

HFM-7 5240 3 29 Wing3 / Wing 2

HFM-7 5241 3 29 Wing 7

HFM-7 5242 3 29 Wing 4

HFM-7 5243 3 29 Wing 5 / Wing 9

HFM-7 5244 3 29 Wing 3

HFM-7 5245 3 29 Wing 5

HFM-7 5246 3 29 Wing 9 / Wing 2

HFM-7 8711 3 29 Wing 5

HFM-7 8713 3 29 Wing 4

HFM-7 8714 3 29 Wing 3 / Wing 9

HFM-7 8715 3 29 Wing 7

HFM-7 8716 3 29 Wing 9

HFM-7 9323 3 29 Wing 9

HFM-7 5250 3 66 D106

HFM-7 8705 3 66 B2A

HFM-7 8706 3 66 K105

HFM-7 8707 21 150 Not available

HFM-7 5249 48 RC-1 Basement

HFM-7 8703 48 RC-1 Machine shop

HFM-7 8704 48 RC-1 Alpha Wing

HFM-7 8708 48 RC-1 ARF

HFM-7 8709 50 69 Not available

HFM-7 8718 50 69 Not available

HFM-6 7034 54 33 Not available

HFM-7 5247 54 Various Not available

HFM-7 8506 54 Various Not available

HFM-7 8507 54 Various Not available

HFM-7 8702 54 412 Not available

HFM-7 8707 54 231 Not available

HFM-7 8710 54 Various Not available

HFM-7 8717 54 Various Not available

HFM-7 9324 54 Various Not available

HFM-8 180 units in TA-55-4 55 Lab exits Not available

a. Source: Hoover [2021a].

b. ARF = Actinide Research Facility. 

2.3.2 Evidence of Portal Monitoring Use

Multiple examples of workers alarming PCMs and HFMs are present in LANL documents; some of 

these documents are listed in Table 2-4. The following examples help demonstrate that LANL not only 

complied with 10 C.F.R. Part 835 [DOE 1993], but also had a comprehensive system to protect 

workers.
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 15 of 56

Table 2-4. Some documents with results of portal monitors.a

Title

SRDB

Ref ID

Radiation Incident Report Notification Checklists – August 1996 178426

Notification Checklists 1999 55552

Radiological Incident Reports January–May 1999 55553

Radiological Incident Report TA-53 Building 7 - 1999 178757

Contamination of Room 408 With Tc-99 in TA-48 55578

Radiological Incident of Employee Foot and Shoe Contamination in TA-48 55580

Radiological Incident of Employee Wing 300 in TA-48 55583

Radiological Incident of Employee Contamination in 400 Wing of TA-48 55585

Radiological Incident of Employee Contamination in Alpha Wing of TA-48 55587

Radiological Incident Reports TA-48 2003 59508

Radiological Incident Reports TA-54 Area G 2002 61765

Radiation Protection Work Control Breakdown Results in Unplanned Uptake 164550

Radiological Incident Reports TA-48 1999 176857

UCNI - RWPs TA-55 2001 (Set 6 Box 2-0691 - Ten Notable RWPs) 178195

UCNI - Radiological Incident Reports TA-55 32-63 178413

Index of Radiological Incidents for TA-55 1999 178420

Radiological Incident Reports 1997 178425

UCNI - Radiological Incident Reports TA-55 64-95 178435

UCNI - Radiological Incident Reports TA-55 96-127 178446

UCNI - Radiological Incident Reports TA-55 128-155 178447

UCNI - Radiological Incident Reports TA-55 1-31 178453

Radiological Incident Reports TA-3 CMR 2000 178739

Worksheets Logbook Notes and Shift Attendance List TA-53 2001 178799

Radiological Incident Reports TA-3 Building 29 December 2003–December 2004 181206

Radiological Incident Reports TA-48 January, March, May–December 1998 181219

Radiological Incident Reports TA-3 Building 29 February–April, October 2000 181222

UCNI - Radiological Incident Reports TA-55 (1-201) 1997 183593

UCNI - RWPs TA-55 CY1998 (One Notable RWP) 183625

a. SRDB Ref ID = Site Research Database Reference Identification (number); UCNI = uncontrolled classified nuclear 

information.

On [redacted], a worker alarmed the PCM-2 in [redacted]. Contamination levels of 50,000 dpm alpha 

and 15,000 dpm beta were detected on the worker’s [redacted]. Contamination of 3,000 dpm alpha 

was removed with Masslin. Collected nasal smears were reported as NDA [SRDB 55553 p.2].

On [redacted], after bagging contaminated filters in [redacted], a worker set of the alarm on a PCM-2. 

Contamination of approximately 6,400 to 6,900 dpm beta was detected on the [redacted] of the 

workers [redacted]. The worker was decontaminated using soap and water. Collected nasal smears 

were reported as NDA [LANL 2000a, pp.31-57]. No bioassay was performed on worker for this event; 

however, the worker participated in routine bioassay. The worker was monitored for both 239

Pu and 

241Am on September 6, 2002; results were reported as less than MDA [LANL 1963–2004]. 

On [redacted], a worker frisking in [redacted] set off the alarm on a fixed monitor for the wing. Health 

Physics personnel arrived after the monitor alarmed. They monitored the worker’s [redacted], which 

were determined to be contaminated to about 500 dpm alpha with 60 dpm removable alpha 

contamination. On examination, Health Physics found alpha contamination in Room 5120. The 

[redacted] of [redacted] workers were collected. Those workers performed whole-body frisks using an 

HFM-7. Nasal smears were collected from each worker from those rooms; all were negative [LANL 

2000b, pp. 11–28].

On [redacted], a worker alarmed an HFM-7 in [redacted]. One [redacted] was decontaminated. No 

area contamination was found. The cause of contamination was considered to be a hot particle. Nasal 
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 16 of 56

smears were collected from each worker from those rooms; all were negative [LANL 2000b, pp. 2–

11].

On [redacted], a worker set off a PCM at the exit to [redacted]. Health Physics confirmed [redacted] 

contamination of 52,000 dpm/100 cm2 beta and [redacted] contamination of 26,000 dpm/100 cm2

beta. The worker’s [redacted] was immediately decontaminated, and the [redacted] were removed for 

analysis and decontaminated. A collected nasal smear was negative. Later analysis of the 

contamination on the [redacted] revealed the radionuclides were 82/85Sr [LANL 1999a, pp. 86–104].

On [redacted], a worker set off an HFM leaving [redacted]. Health Physics confirmed alpha 

contamination of the right [redacted] and personal [redacted] with the highest reading being 700 

counts alpha. The [redacted] was decontaminated. The worker was able to clear HFM-6 and exit the 

contaminated area. The floors of [redacted] were decontaminated [LANL 2002a]. While not required 

for this particular contamination, the worker was on routine bioassay for plutonium and uranium which 

further demonstrates thoroughness of the LANL monitoring program. Results of routine bioassay 

performed after the contamination event were less than the MDAs reported for plutonium and 

uranium.

On [redacted], a worker alarmed the PCM-1B in [redacted]. The worker’s [redacted] were 

contaminated with 4,800 dpm beta. Subsequent surveys also detected 47,000 dpm on the worker’s 

[redacted] dosimeter. Collected nasal swipes were reported as NDA [LANL 2003a, pp. 9-20].

On [redacted], a [redacted] to [redacted] alarmed the PCM-1B. Contamination was located on the 

[redacted] of a [redacted] and the isotope was identified as 188W. The activity was 46,000 dpm and 

was not removable with tape. The [redacted] and other personnel performed no work with radioactive 

materials. Masslin swipes and direct surveys of the floor, hoods, and office sign in area detected no 

contamination. It was determined that the contamination was brought to LANL on the [redacted] from

a facility in Texas. The [redacted] was washed to NDA [LANL 2003a, pp. 482-490].

Portal monitors were extremely beneficial in LANSCE (TA-53). LANL [2001a] documents many 

examples of PCM use. The following is an account recorded on August 12, 2001 (p. 19), in which 

1LSA is a service area in MPF-7, Room 200; 1LTC is the linear accelerator target crypt, MPF-7; ER-1 

is Experimental Area Room 1; ER-2 is Experimental Area Room 2; FP-2 is flight path 2; and REB is a 

room in the Proton Storage Ring, MPF-28: 

While waiting for beam to stabilize between 1900 and 2000 hrs we prepared the FP-2 

grid; documentation; and staged instruments. At 2000 hrs the beam was stabilized @ 

56uA and we started the survey. At 2030 hrs the 2080 failed and we had to get another 

instrument, and then the beam dropped off until approx 2100 hrs. From 2100 hrs to 2300 

hrs we finished the FP-2, shutter open survey in both ER-1 and ER-2 with 60 survey 

points. In ER-1 the highest reading was survey point #1 next to the shield bulk head 

which read 10 mR/hr gamma and 29 mrem neutron. The remaining readings in ER-1 

were <5mR gamma + neutron. On top of FP#2 there is a lot of background radiation from 

the hole in the roof from the 1LSA and from the RLW [radioactive liquid waste] drain line: 

These reading were 180 mR/hr @contact, 100 mR/hr @ 30cm, 30 mR/hr @ 1m from the 

roof, 8 mR/hr from the RLW line, and the general background is approx 10 mR/hr: As 

the radiation levels from 1LSA [may] increase, I believe the south section of FP#2 should 

be roped off to prevent entry without an RCT to verify dose rates in that area, FP#2 has 

a safety fence on the west side between FP#3, but needs a safety fence on the East 

side between FP#1. No readings were taken in the gap between FP#1 and FP#2. A 

proper ladder also needs to be installed to allow access to the top of FP#2. In ER-2 all 

reading [sic] were <0.2 mR/hr gamma and 0 mrem neutron: No reading [sic] were taken 
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 17 of 56

on top of FP#2 in ER-2 because there was no safety tape or fall barriers. All personnel 

surveyed NDA through the ER-2 PCM.

On [redacted], work was being performed in [redacted] on the target water system in the [redacted]. 

After the work was completed, the worker removed his anti-contamination clothing and proceeded to 

the PCM which alarmed. RCTs were notified and the worker was surveyed and found to have 

contamination levels on [redacted] of 800 to 3,000 cpm. Contamination was also found on the 

worker’s [redacted] with levels up to 1,200 cpm. The RCTs also checked all areas where 

contamination may have been tracked and there was no contamination detected. The worker was 

decontaminated and nasal smears were taken with a combined result of 208 dpm beta; the action 

level for beta combined was 500 dpm. Health Physics analyzed the smears with a photon detector; 

lutetium and hafnium isotopes were noted [LANL 1999b, pp. 13-26]. While not required by the results 

of the nasal smears Health Physics monitored the worker by whole-body counting on February 4, 

1999 with radioncludes 22Na, 7

Be, 54Mn, 11C, 13N and 152Eu all reported as less than MDA [LANL 

1963–2004]. 

On [redacted], the ESH-1 Field Office was called by a worker to inform RCTs that a worker alarmed 

the PCM-1B in [redacted] while doing a self survey before exiting [redacted]. An RCT responded to 

the scene and found beta/gamma contamination on the [redacted] (380,000 dpm), [redacted] (1.6 x 

106 dpm), and [redacted] (4,000 dpm) of the worker. The worker donned a [redacted] and [redacted]

and was escorted to the MPF-502 Decontamination Facility. The worker’s [redacted] were removed, 

bagged, and retained by ESH-1. The [redacted] and [redacted] were successfully decontaminated. 

While not required by the results of the nasal smears Health Physics monitored the worker by whole 

body counting on February 10, 1999 with radioncludes 22Na, 7

Be, 54Mn, 11C, 13N, and 152Eu all reported 

as less than MDA. The area was secured and posted until HP was able to do a complete survey of 

the area [LANL 1999b, pp. 27-34; LANL 1963–2004]. 

On [redacted], a worker alarmed a PCM-1B in [redacted] after using the monitor. The worker’s 

[redacted] was contaminated to approximately 86,000 dpm beta/gamma. The worker was escorted to 

a decontamination trailer and the [redacted] was successfully decontaminated with soap and water 

[LANL 1999b, pp. 48-53].

On [redacted], a worker alarmed the PCM-1B while exiting [redacted]. [Redacted] contamination of 

48,000 dpm beta activity was detected around the [redacted] and [redacted]. The worker was 

successfully decontaminated using soap and water. A result of collected [redacted] smears showed 

42 dpm beta was detected in the [redacted] [LANL 1999b, pp. 66-82]. Health Physics monitored the 

worker by whole-body counting on May 14, 1999 with 173Hf reported as less than MDA [LANL 1963–

2004]. 

On [redacted], a worker alarmed the PCM-1B while exiting [redacted]. Skin contamination of 47,000 

dpm beta/gamma was detected on the [redacted]. The cause of contamination was considered to be a 

hot particle. The [redacted] was successfully decontaminated using a mild cleanser and kimwipes 

[LANL 1999b, pp. 87-92].

On [redacted], a worker exiting [redacted] alarmed a PCM. Health Physics determined contamination 

of the worker’s [redacted] with a hot spot (contamination area greater than neighboring regions of the 

area) on the [redacted] reading 1,200 dpm beta and 200 dpm alpha. On investigation, Health Physics 

determined the cause of the alarm was radon contamination (NIOSH assumes this meant from radon 

progeny) and released the worker [LANL 2001a, p. 92].

NIOSH acknowledges that some workers may have skipped using portal monitors or left a controlled

area with a PCM alarm, as indicated in two instances for which Radiological Incident Reports were 

initiated [LANL 1999c, pp. 19-20]. Although the use of personnel self-monitoring was a component of 
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 18 of 56

the radiological control program, it was not the only component. The program relied on each 

component to keep doses to 100 mrem or less, including but not limited to contamination surveys, air 

monitoring, and worker training. The lack of compliance by some workers to use PCMs does not 

prevent NIOSH from performing dose reconstructions.

3.0 CONTAMINATION SURVEY AND AIR MONITORING DATA IN TECHNICAL AREAS 3, 48, 

AND 53

To evaluate the effectiveness of the LANL radiological control program, the ORAU Team analyzed 

example survey and air monitoring data. The ORAU Team selected results of routine smear surveys 

in three areas, TA-3, TA-48, and TA-53, and routine air sampling results for the same TAs. The three 

TAs were selected because exotic radionuclides were known to have been handled there from 

January 1, 1996, to December 31, 2005. This exercise was not intended to be all inclusive of all areas 

at LANL that handled exotic radionuclides. Although data from 1996 through 2005 are represented, 

the ORAU Team does not have data for each TA for every year and the data are not distributed 

equally among the TAs. Documents with routine smear and air monitoring data used for this report are 

listed in Attachment A, Table A-1.

Routine surface contamination documents typically contained laboratory results for many smears 

taken within a building on a weekly or quarterly frequency. Information extracted from each surface 

contamination monitoring document includes sample collection date, TA and building number, survey 

frequency, number of results, number of gross alpha results exceeding 20 dpm/100 cm2

, number of 

gross alpha results exceeding 400 dpm/100 cm2

, number of gross beta results exceeding 

1,000 dpm/100 cm2

, and number of gross beta results exceeding 3,200,000 dpm/100 cm2. The limits

of 400 dpm/100 cm2 and 3,200,000 dpm/100 cm2 were derived in ORAUT [2021b] and are explained 

in the equations provided later in this section. These two limits are referred to as “ORAU Team 

criteria.” The 20 dpm/100 cm2 and 1,000 dpm/100 cm2 were standard action levels as indicated in the 

LANL RadCon Manual [LANL 1994, Table 2-2] (Table 2-1 in this report). 

The purpose of compiling these data was twofold:

1. To establish that the routine surface contamination survey programs conducted during the 

period of interest (1996 through 2005) in the areas where exotic radionuclides could have 

been handled were substantial. The numbers of surveys and smears per survey were tallied. 

Note that the data in this report include results from routine surveys only. 

2. To assess the routine surface contamination status in these areas and to determine the 

likelihood that unmonitored workers in these areas could have received significant intakes as a 

result of resuspended surface contamination. Contamination areas are defined in 10 C.F.R. 

Part 835 as having removable alpha contamination exceeding 20 dpm/100 cm2 or removable 

beta contamination exceeding 1,000 dpm/100 cm2 [DOE 1993]. The number of smears per 

survey that exceeded this threshold was tallied. LANL worked to maintain removable alpha 

and beta contamination to those values under the LANL RadCon Manual [LANL 1994, 

Table 2-2] (Table 2-1 in this report). 

Areas with readings above the limits listed in Table 2-2 of the LANL RadCon Manual for 

surface contamination areas were posted appropriately and/or resurveyed, as demonstrated in 

a 1997 memorandum [LANL 1997a, p. 2]:

SUBJECT: THIRD QUARTER SMEAR SURVEY FOR TA-53
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 19 of 56

Attached is the 1997 Third Quarter Smear Survey for TA-53. The survey 

information is provided on a smear data/map format. All smears were taken 

during the months of August and September 1997.

A 100cm2 smear was taken at each survey location using NuCon smears. The 

smears are then taken to the TA-53 ESH-1 Satellite Count Lab located in MPF-1, 

Laboratory Operations Building (L. O. B.) and are counted on the Canberra 2400 

alpha/beta proportional counter and an NaI gamma counter. All data is corrected 

for background and counter efficiencies and reported in disintegrations per 

minute (dpm). Areas with readings above release limits listed in Table 2-2 of the 

LANL RadCon Manual for Surface Contamination Areas are posted appropriately 

and/or resurveyed. [emphasis added] 

The purpose of tallying the number of smears per survey exceeding 400 dpm/100 cm2 alpha 

and 3,200,000 dpm/100 cm2 beta was to assess the likelihood that unmonitored individuals 

could have received intakes resulting in doses exceeding 100 mrem. For this assessment, 

227Ac type F was assumed to represent the worst-case alpha emitter and 90Sr type S was 

assumed to represent the worst-case beta emitter. The rationale behind these numbers is 

given later in this section. 

Routine air monitoring documents typically contained laboratory results for air filters exchanged on a 

weekly or other periodic frequency for multiple locations within a building. Information extracted from 

each air monitoring document included sample collection date, TA and building number, survey

frequency, number of results, number of gross alpha results exceeding 0.04 dpm/m3 and if the 

measurement had sufficient sensitivity to detect 0.04 dpm/m3

, and the number of gross beta results 

exceeding 320 dpm/m3

. Like with the surface contamination data, the purpose of compiling these air 

monitoring data was twofold:

1. To establish that the routine air monitoring programs during the period of interest (1996 

through 2005) in the areas where exotic radionuclides could have been handled were 

substantial. This is why the numbers of surveys and samples were tallied. As with the surface 

contamination data, the air monitoring results in this report only include results from routine air 

monitoring contained in the analyzed set of data. 

2. To assess the routine air contamination status in these areas and to determine the likelihood 

that unmonitored workers in these areas could have received significant intakes as a result of 

airborne contamination. The purpose of tallying gross alpha results exceeding 0.04 dpm/m3

and gross beta results exceeding 320 dpm/m3 was to assess the likelihood that unmonitored 

individuals could have received intakes resulting in doses exceeding 100 mrem. As with the 

surface contamination assessment, 227Ac type F was assumed to represent the worst-case 

alpha emitter and 90Sr type S was assumed to represent the worst-case beta emitter. The 

rationale behind these numbers is given later in this section. 

Under 10 C.F.R. Part 835, DOE did not require bioassay programs for workers who were unlikely, 

under typical conditions, to receive 100 mrem in a year [DOE 1993]. However, to ascertain if LANL 

controlled internal doses from exotic radionuclides, the ORAU Team used limiting assumptions with 

the analysis of monitoring data. These assumptions include:

• Worker breathing rate = 0.02 m3

/min; 

• Worker occupancy = 2,000 hr/yr (100% occupancy); and
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 20 of 56

• Surface contamination resuspension factor = 1.0 × 10-6 m-1 (90th-percentile maximum 

likelihood) [Abu-Eid et al. 2002]. 

In previous LANL documents and discussions, including evaluation reports, Work Group meetings 

and associated papers, the following radioactive materials have been identified as having data 

deficiencies potentially affecting the feasibility of dose reconstruction: MFPs and mixed activation 

products (MAPs), 241Am (separated from plutonium), 232Th, 230Th, 227Ac, 231Pa, 237Np, and 244Cm. Of 

these, considering the dose conversion factors presented in ICRP Publication 68 [ICRP 1995], NIOSH 

has determined that 227Ac type F (assigned to the alpha category because of its progeny) and 90Sr 

type S are the alpha and beta emitters handled at LANL that would result in the highest dose 

consequences per unit activity of material. In this evaluation therefore, when evaluating gross alpha 

and gross beta survey results when the specific radionuclides are unknown, NIOSH assumed 227Ac 

type F (alpha) or 90Sr type S (beta). This ensured that the worst-case scenario was being evaluated. 

The ORAU Team derived projected doses from direct air monitoring or resuspended surface 

contamination using effective dose coefficients for inhalation from ICRP Publication 68 [ICRP 1995] 

for alpha- (227Ac type F) and beta-emitting (90Sr type S) radionuclides. Air concentration values 

(dpm/m3

) that would result in 100 mrem CED per year using the above assumptions are presented in 

ORAUT [2021b]. The selected radionuclides resulted in the lowest calculated air concentration value 

for their respective categories. Type S 90Sr was chosen as the more limiting beta emitter because it 

has a lower air concentration than type F even though type F was the likely material type to be found 

on site at LANL. Note that these assumptions result in a conservative estimate of the workplace 

values indicating a potential for intakes resulting in 100 mrem. The selected radionuclides and 

associated material types are not likely to be the predominant component of an encountered mixture 

and a worker does not typically spend 2,000 hours in a single location for a year. Doses based on 

more realistic assumptions at these airborne activity and surface contamination levels will be smaller. 

The following equations from [ORAUT 2021b] were used to determine the 100-mrem values:

(3-1) 1

2

D C AC

HC RF 100

× = × ××

where:

AC100 = air concentration (Bq/m3

) of 227Ac type F or 90Sr type S that would result in 

100 mrem/yr

D = dose of 100 mrem/yr

C1 = 0.00001 Sv/mrem conversion factor

H = 2,000 hr/yr worked

C2 = 60 min/hr conversion factor

R = breathing rate of 0.02 m3

/min

F = ICRP effective dose coefficient of 6.3 × 10-4 Sv/Bq for 227Ac or 7.7 × 10-8 Sv/Bq for 

90Sr

Note: To convert to dpm/m3

, the 6.6 × 10-4 Bq/m3 result for 227Ac is multiplied by 60 dpm/Bq yielding 

0.04 dpm/m3 and the 5.4 Bq/m3 for 90Sr is multiplied by 60 dpm/Bq yielding 320 dpm/m3

. 

(3-2)

DC C SC

F R H C RF C

1 2

100

3 4

× × = ××× × ×
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 21 of 56

where:

SC100 = resuspended surface contamination (Bq/100cm2

) of 227Ac type F or 90Sr type S that 

would result in 100 mrem from inhalation

D = dose of 100 mrem/yr

C1 = 0.00001 Sv/mrem conversion factor

C2 = constant to adjust result to 100 cm2 to account for surface smear area

F = ICRP effective dose coefficient of 6.3 × 10-4 Sv/Bq for 227Ac or 7.7 × 10-8 Sv/Bq for 

90Sr 

R = breathing rate of 0.02 m3

/min

H = 2,000 hr/yr worked

C3 = 60 min/hr conversion factor

RF = resuspension factor of 1 × 10-6 m-1 

C4 = 10,000 cm2/m2 conversion factor

Note: To convert to dpm/100 cm2

, the 6.6 Bq/100 cm2 for 227Ac is multiplied by (60 dpm/Bq) yielding 

400 dpm/100 cm2 and the 5.4 × 104 Bq/100 cm2 for 90Sr is multiplied by (60 dpm/Bq) yielding 

3,200,000 dpm/100 cm2

. 

Note: The overall difference between equations 3-1 and 3-2 is a factor of 10,000. This is the product 

of the 1 × 10-6 m-1 resuspension factor and the conversion from cm2 to 100 cm2 for surface 

contamination.

Table 3-1 summarizes monitoring results for all three TAs as a whole (TA-3, TA-48, and TA-53) and 

individually. Table 3-2 summarizes them by year. A review of the data in Tables 3-1 and 3-2 shows 

that over 98% of all smears and 99% of air monitoring results used in the report were below the lower 

limits for alpha of 20 dpm/100 cm2 and 0.04 dpm/m3

, respectively. While evaluated data do not 

represent a random sample or all survey data, these results suggest workplaces were well controlled

in terms of radioactive contamination. However, the results over those limits must be considered to 

determine if any could have contributed to internal doses greater than 100 mrem. These data are 

provided in Table 3-3. 

To determine if resuspended surface contamination could have led to worker doses greater than 

100 mrem, the ORAU Team looked at the number of alpha and beta results exceeding the upper 

limits (400 dpm/100 cm2 alpha and 3,200,000 beta dpm/100 cm2

). A total of 28 alpha surveys 

exceeded 400 dpm/100 cm2 in TA-3, or 0.3% of all spots surveyed in TA-3. Twenty-one of the 28 

spots were found in the Sigma complex with uranium being the radionuclide of interest in 1999. A total 

of four alpha surveys exceeded 400 dpm/100 cm2 in TA-48, or 0.05%: one smear each in Rooms 6, 

312, and 409, all where alpha materials were handled, and one smear in the RC-1 hot cell. A total of 

three alpha surveys exceeded 400 dpm/100 cm2 in TA-53, or 0.01%. While the ORAU Team does not 

have specific documentation specifying the controlled contamination designations of areas in these 

three areas, all of these areas were controlled under routine monitoring. An example is provided for 

each technical area as follows: TA-3 [Costigan 2000], TA-48 [Costigan 1997], and TA-53 [Salazar 

2005]. Summary data on the number of smears that exceeded upper limits are given in Table 3-4. The 

ORAU Team also tallied the number of air monitoring results above limits for alpha of 0.04 dpm/m3

and for beta 320 dpm/m3 (Table 3-5). Results used in this report are evidence that LANL controlled 

contamination in routine workplaces. Seven percent of air samples collected in TA-53 exceeded either 

alpha or beta limits; however, these results represent samples collected at or around the accelerator 

target or in Experimental Area A where isotope production work was performed in hot cells. Twelve of 

the 14 air sample results exceeding the air concentration beta limit were recorded in 1997 in TA-53 

with spallation activities [see Section 3.3.1]. These locations were not accessible by workers during 

beam generation and as such would not likely have contributed to intakes. 
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 22 of 56

Based on the results above, it is clear that very few surveys exceeded either LANL limits or ORAU

Team criteria, which indicates LANL had a good contamination control program. As a reminder, 

workers exiting Contamination Areas, High Contamination Areas, Airborne Radioactivity Areas, RBAs, 

and CAs were required to frisk for contamination. The ORAU Team has provided examples of Health 

Physics response and followups to personnel monitor alarms in Section 2.3.2. 
Document No. ORAUT-RPRT-0101 Revision No. 0

0 Effective Date: 03/01/2022 Page 23 of 56

Table 3-1. Monitoring data by TA.1

TA

No. of 

survey 

results

Alpha smear 

results

exceeding

20 dpm/100 cm2

Alpha smear

results

exceeding

400 dpm/100 cm2

Beta smear

results

exceeding

1,000 dpm/100 cm2

Beta smea 

results exceeding 

3,200,000 dpm/100 cm2

No. of air 

monitoring 

results

Alpha air 

results 

exceeding

0.04 dpm/m3

Beta air 

results 

exceeding

320 dpm/m3

All 40,717 738 35 225 0 67,067 494 14

3 8,771 574 28 112 0 61,704 179 0

48 7,888 57 4 54 0 3,214 29 0

53 24,058 107 3 59 0 2,149 286 14

Table 3-2. Monitoring data by year.

Year

No. of 

survey 

results

Alpha smear 

results 

exceeding

20 dpm/100 cm2

Alpha smear 

results 

exceeding

400 dpm/100 cm2

Beta smear

results

exceeding

1,000 dpm/100 cm2

Beta smear

results exceeding 

3,200,000 dpm/100 cm2

No. of air 

monitoring 

results

Alpha air 

results 

exceeding 

0.04 dpm/m3

Beta air 

results 

exceeding 

320 dpm/m3

All 40,717 738 35 225 0 67,067 494 14

1996 4,381 56 4 29 0 180 51 1

1997 6,222 63 5 10 0 1,766 175 12

1998 771 32 1 0 0 1,610 46 0

1999 8,043 445 16 169 0 1,637 25 0

2000 4,351 63 6 8 0 13,167 59 1

2001 1,665 5 0 0 0 13,885 50 0

2002 560 0 0 0 0 11,895 73 0

2003 7,383 1 0 4 0 268 0 0

2004 4,448 62 2 2 0 13,641 10 0

2005 2,893 11 1 3 0 9,018 5 0

Table 3-3. Breakdown of smear results above lower limits.

TA

Alpha smear 

results 

exceeding

20 dpm/100 cm2

Beta smear results 

exceeding

1,000 dpm/100 cm2

Total 

number of 

area smearsa

Total results 

exceeding 

lower limit 

(alpha+beta)

% of single TA 

results 

(alpha+beta)a

All 738 225 40,717 963 1.2

3 574 112 8,771 686 3.9

48 57 54 7,888 111 0.70

53 107 59 24,058 166 0.34

a. The total number of smears is multiplied by 2 to represent alpha and beta results.

1 Tables 3-1 through 3-5 report surface contamination survey data and air monitoring data from these three TAs for the period from January 1, 1996, through 

December 31, 2005, captured only during 2019. These tables demonstrate the effectiveness of the LANL contamination control programs.
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 24 of 56

Table 3-4. Breakdown of results above upper surface contamination limits (100-mrem limit).

TA

Alpha results 

exceeding 

400 

dpm/100 cm2

Beta results 

exceeding 

3,200,000 

dpm/100 cm2

Total number 

of area 

smears

Total results 

exceeding 

upper limit

% of single 

TA results 

(alpha+beta)a

All 35 0 40,717 35 0.04

3 28 0 8,771 28 0.16

48 4 0 7,888 4 0.03

53 3 0 24,058 3 0.01

a. The total number of smears is multiplied by 2 to represent alpha and beta results.

Table 3-5. Air concentrations above alpha and beta limits. 

TA

Alpha air 

results 

exceeding 

0.04 dpm/m3

Beta air 

results 

exceeding

320 dpm/m3

Total number 

of area air 

sample results 

Total results 

exceeding 

limits

% of single 

TA results 

(alpha+beta)a 

All 494 14 67,067 508 0.38

3 180 0 61,704 179 0.15

48 29 0 3,214 29 0.45

53 286 14 2,149 300 7.0

a. The total number of air samples is multiplied by 2 to represent alpha and beta results.

3.1 TECHNICAL AREA 3 

TA-3 has contained a mixture of LANL activities that include experimental sciences, work with special 

nuclear materials, administrative work, public and corporate access, theoretical studies and

computations, and physical support operations. Many of the major facilities for providing physical 

support such as utilities and maintenance are in TA-3. Much like a university campus, research 

facilities are scattered throughout the area. These range from small laboratories with bench-scale 

operations to activities involving radioactive materials in the CMR facility in Building 29 [Romero and 

Faust 1992a; LANL 1998a].

Survey results for TA-3 were obtained for Building 29 (CMR) and the Sigma Complex (Building 66). 

All smears for alpha plus beta were taken from RBAs or CAs. Alpha surface contamination exceeded 

the lower limit in 574 individually smeared spots of 100 cm2

, and beta surface contamination 

exceeded the lower limit in 112 smears of 100 cm2

. Surface contamination was not found in the same 

location over more than two consecutive surveys. The most contaminated areas were in Building 29 

Room 5023 where actinides were used on November 10, 1999. In that survey, 34 smears exceeded 

the lower limit of 20 dpm/100 cm2

, and 1 smear exceeded 400 dpm/100 cm2. In all, 194 smears 

revealed surface contamination above the lower limits in Building 29 over all surveys. Note that 

smears were part of an overall survey and that one survey can have many smears. The radionuclides 

used in these locations primarily included actinides and special nuclear material (SNM). Three 

hundred seventy-six smears revealed surface contamination above the lower limits in the Sigma 

Complex (primarily Building 66) where SNM comprised the primary radionuclides of interest. The set 

of individual smears exceeding lower surface contamination limits was 3.9% of the total smears 

available for TA-3 (alpha and beta smears tabulated as individual smears). Smear data for TA-3 are 

given in Table A-2.

Considering the upper limits for alpha and beta surface contamination, the ORAU Team found 28 

spots that exceeded 400 dpm/100 cm2 alpha. No spot surveys exceeded the 3,200,000 dpm/100 cm2

beta limit (Table 3-1). Seventeen of the 28 spots were found in the Sigma Complex with uranium 

being the radionuclide of interest, the rest were found in Building 29 with actinides being the primary 

source term, and 99.85% of smears were at or below upper surface contamination limits. Surveyed 

spots with readings above the limits listed in Table 2-2 of the LANL RadCon Manual (Table 2-1 in this 
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 25 of 56

report) for surface contamination areas were posted appropriately and/or cleaned and resurveyed 

[LANL 1997a, p. 2]. Routine workers such as custodians would not have been exposed to these levels 

of surface contamination over time. They would typically not be monitored if their potential dose would 

not exceed 100 mrem. 

Airborne contamination results exceeding either the alpha or beta airborne contamination limit were 

found on 119 sets of airborne results for TA-3. All of these were recorded for Building 29 and due to 

alpha radiation exceeding 0.04 dpm/m3

. The most results over the alpha limit were obtained in Wing 5 

(57 results), while the fewest were found in Wing 4 (3 results). This is influenced by the number of 

results found for each wing, and it is expected that air monitoring was performed in areas of higher 

concern. In all, 179 individual air monitoring results exceeded 0.04 dpm/m3

. The set of individual air 

monitoring results that exceeded the alpha and beta limits in TA-3 is 0.15% of the total air monitoring 

results (alpha plus beta) available for TA-3; results are given in Table A-3.

3.2 TECHNICAL AREA 48

TA-48 is known as the Radiochemistry Site. The facilities at TA-48 support research and development 

in nuclear and radiochemistry. Some measurements of radioactive substances were taken in hot cells 

equipped for remote handling. Although radiochemical operations were conducted primarily in 

Buildings 1, 8, 28, 45, and 107, only Building 1 contained sufficient radioactive materials to be 

considered hazardous. During the period of evaluation, the RC-1 building was divided into an office 

wing, light chemistry laboratories for performing low-level radiochemistry, a hot cell complex to 

produce medical radioisotopes, an alpha wing for processing alpha-emitting radioactive and toxic 

materials, a “counting room” complex, and a secure data wing with a classified computer and vault 

containing historical data [LANL 1998a].

Activities at Building RC-1 included small-scale radiochemistry in the laboratories area, chemical 

research of high alpha activity materials in the alpha facility, final analysis of samples in the counting 

room, and small-scale production of medical radioisotopes in the hot cells area. The dissolution area 

housed a high-activity chemistry area. The activities conducted there involved the largest amounts of 

beta/gamma radioactivity outside of the hot cells area. Both alpha materials and FPs were handled 

and separated in this building [LANL 1998a].

Surface contamination results exceeding either the lower alpha or beta contamination limit were found 

in 56 surveys performed in TA-48 across 1997, 1999, 2004, and 2005, all in Building RC-1. From 

these 56 surveys, alpha surface contamination was found on 57 individual smears while beta surface 

contamination was found on 54 individual smears. The radionuclides used in these locations primarily 

included actinides and mixed fission and activation products (MFAPs). All smears exceeding the lower 

limits of surface contamination were collected in RBA or CA locations. The set of individual smears 

exceeding lower surface contamination limits is 0.7% of the total smear results available for TA-48; 

results are given in Table A-4.

Considering the upper limits for alpha and beta surface contamination, the ORAU Team found only 

four smeared spots that exceeded 400 dpm/100 cm2 alpha. No spots exceeded 

3,200,000 dpm/100 cm2 beta (Table 3-1). All four surveyed spots were in Building RC-1; 99.9% of 

evaluated smears were at or below upper surface contamination limits. Surveyed spots with readings 

above the limits listed in Table 2-2 of the LANL RadCon Manual (Table 2-1 in this report) for surface 

contamination areas were posted appropriately and/or cleaned and resurveyed [LANL 1997a, p. 2]. 

Routine workers such as custodians would not have been exposed to these levels of contamination 

over time. They would typically not be monitored if their potential dose would not exceed 100 mrem. 

Airborne contamination results exceeding either the alpha or beta airborne contamination limit were 

found on 10 sets of airborne results for TA-48. All of these were recorded for Building RC-1 around 
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 26 of 56

the hot cell and supporting rooms. Twenty-nine individual air monitoring results exceeded 0.04 

dpm/m3 alpha. The set of air monitoring results that exceeded the alpha and beta limits in TA-48 is 

0.45% of the total air monitoring results available. These data are presented in Table A-5.

3.3 TECHNICAL AREA 53

TA-53 housed the LANSCE. During the period of this evaluation, TA-53 had approximately 400 

buildings and other structures and housed about 800 personnel. That population could have 

increased by several hundred when the linear accelerator was in operation as visiting scientists from 

around the globe came to Los Alamos to monitor and participate in experiments. Site workers were 

protected by shielding, fencing, access controls, sweep procedures, beam shutoff mechanisms, 

monitoring devices, dosimetry, posted safety information, training, administrative controls, and 

emergency response mechanisms [LANL 1998a].

Surface contamination results exceeding either the lower alpha or beta contamination limit were found 

in 46 surveys performed in TA-53. These surveys were collected at the target area, along the beam 

line, and in the beam service area, Proton Storage Ring (PSR), and ancillary support facilities. All 

smeared locations were within Health Physics regulated areas that LANL monitored for external 

exposures and intakes. From these 46 surveys, alpha surface contamination was found on 107 

smeared spots, and beta surface contamination was found on 59 smeared spots. The radionuclides in 

these locations primarily included actinides and MFAPs. The set of individual smears (alpha plus

beta) exceeding lower surface contamination limits is 0.34% of the total smears available for TA-53; 

results are given in Table A-6.

Considering the upper limits for alpha and beta surface contamination, the ORAU Team found three

spots that exceeded 400 dpm/100 cm2 alpha (Table 3-4). No spot survey exceeded the 

3,200,000 dpm/100 cm2 beta; 99.9% of smears were at or below upper surface contamination limits. 

One of the spots in TA-53 was found in the experimental area in MPF-3M, and the other two were 

found in the beam target area. None of 24,058 smeared spots exceeded the upper limit for beta.

Surveyed spots with readings above the limits listed in Table 2-2 of the LANL RadCon Manual (Table 

2-1 in this report) for surface contamination areas were posted appropriately and/or cleaned and 

resurveyed [LANL 1997a, p. 2]. Routine workers such as custodians would not have been exposed to 

these levels of surface contamination over time. They would typically not be monitored if their 

potential dose would not exceed 100 mrem.

For air monitoring samples analyzed for gross alpha and beta contamination, 286 individual air 

monitoring results exceeded 0.04 dpm/m3 alpha and 14 individual results exceeded the beta limit of 

320 dpm/m3

. The set of air monitoring results that exceed the alpha and beta limits in TA-53 is about 

7% of the total available air monitoring results (alpha plus beta). Air monitoring results represent 

sampling at the target area, along the beam line, and at the beam service area, PSR, and ancillary 

support facilities. A majority of these results were reported for Experimental Area A where 185

individual air monitoring results exceeded 0.04 dpm/m3 alpha and 9 individual results exceeded the 

beta limit of 320 dpm/m3

, the latter not unexpected given activation products arising from the 

spallation processes. The set of air monitoring results that exceed the alpha and beta limits in TA-53 

is given in Table A-7.

3.4 SUMMARY OF TECHNICAL AREA EVALUATION

While the analysis included limited survey and air monitoring data for three TAs, results of smear 

surveys and air monitoring demonstrate that LANL controlled radioactive contamination. 

Radionuclides of interest for the period of evaluation were primarily actinides (uranium, plutonium, and 

americium) in all three TAs but included activation and FPs in TA-48 and TA-53.
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 27 of 56

4.0 CONCLUSIONS

In this report, the ORAU Team has discussed the LANL radiological control program and 

demonstrated that contamination was well controlled in TA-3, TA-48, and TA-53. Data evaluated in 

Section 3.0 shows that LANL controlled routine contamination that could lead to doses greater than 

100 mrem at all three TAs. While data used in the report are not the total set of data collected by 

LANL, the weight of evidence supports that premise. The ORAU Team has shown that LANL 

operated a radiation protection and control program that included the use of portal monitors to identify 

and remediate workplace radiological contamination. LANL Health Physics responded to even small 

levels of contamination. Primary radionuclides of interest were exotic fission and exotic activation, 

spallation products in TA-53, and actinides (primarily uranium and plutonium).

A crucial part of the LANL radiological control program required workers exiting Contamination Areas, 

High Contamination Areas, Airborne Radioactivity Areas, and RBAs to frisk for contamination. The 

ORAU Team has provided examples of Health Physics’ response and followup to personnel monitor 

alarms in Section 2.3.2. 

The ORAU Team concludes the weight of the evidence clearly indicates that worker doses to 

unmonitored exotic radionuclides would not likely have exceeded 100 mrem. Doses for workers 

monitored by bioassay can be bounded using bioassay results. Doses for unmonitored workers can 

be bounded at 100 mrem because no evidence was found that would contradict these conclusions. 

Therefore, the assumption, based on data and facts provided in the report, is that no unmonitored 

workers received a dose above 100 mrem/yr during normal operations.
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 28 of 56

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Ref ID: 180916]

LANL [1999–2000c]. Smear and counter surveys TA-53 December 1999 to February 2000. Los 

Alamos National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 181013]

LANL [1999–2001]. Air samples TA-3 Building 29 December 1999 to January 2001. Los Alamos 

National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 180950]

LANL [2000a]. Radiological incident reports TA-3 CMR 2000. Los Alamos National Laboratory, Los 

Alamos, NM: University of California. [SRDB Ref ID: 178739]

LANL [2000b]. Radiological incident reports, nasal swipes, smear, LAS and direct surveys TA-3 

Building 29 January to June and August to November 2000. Los Alamos National Laboratory, Los 

Alamos, NM: University of California. [SRDB Ref ID: 180915]

LANL [2000c]. Fixed head air sample results TA-3 2000. Los Alamos National Laboratory, Los 

Alamos, NM: University of California. [SRDB Ref ID: 178736]

LANL [2000d]. Air samples TA-3 Building 29 2000. Los Alamos National Laboratory, Los Alamos, NM: 

University of California. [SRDB Ref ID: 180930]
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 33 of 56

LANL [2000e]. Radiological surveys TA-3 Building 29 2000. Los Alamos National Laboratory, Los 

Alamos, NM: University of California. [SRDB Ref ID: 178803]

LANL [2000f]. Smear and counter surveys TA-53 February to May 2000. Los Alamos National 

Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 181010]

LANL [2000g]. Smear surveys TA-53 2000. Los Alamos National Laboratory, Los Alamos, NM: 

University of California. [SRDB Ref ID: 176870]

LANL [2000h]. Giraffe air samples TA-53 2000. Los Alamos National Laboratory, Los Alamos, NM: 

University of California. [SRDB Ref ID: 178812]

LANL [2000–2001]. Fixed head air samples TA-3 Building 29 Wing 7 January 2000 to January 2001. 

Los Alamos National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 181343]

LANL [2001a]. Fixed air samples and radiological surveys TA-3 Building 29 January–September 

2001. Los Alamos National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 

180903]

LANL [2001b]. Air samples TA-3 Building 29 Wing 5 2001. Los Alamos National Laboratory, Los 

Alamos, NM: University of California. [SRDB Ref ID: 181005]

LANL [2001c]. Air samples and CAM filter surveys TA-53 Building 29 2001. Los Alamos National 

Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 180907] 

LANL [2001–2002a]. Air samples TA-3 Building 29 January 2001 to January 2002. Los Alamos 

National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 180945]

LANL [2001–2002b]. Air samples TA-3 Building 29 Wing 7 January 2001 to January 2002. Los 

Alamos National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 180986]

LANL [2001–2002c]. Air samples TA-3 Building 29 2001 and January 2002. Los Alamos National 

Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 180913]

LANL [2002a]. Radiological incident of employee foot and shoe contamination in TA-48. Los Alamos 

National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 55580]

LANL [2002c]. Radiological incident reports TA-54 Area G 2002. Los Alamos National Laboratory, Los 

Alamos, NM: University of California. [SRDB Ref ID: 61765]

LANL [2002d]. Fixed head air sample results TA-3 CMR 2002. Los Alamos National Laboratory, Los 

Alamos, NM: University of California. [SRDB Ref ID: 178716]

LANL [2002e]. Fixed head air sample results TA-3 Building 29 2002. Los Alamos National Laboratory, 

Los Alamos, NM: University of California. [SRDB Ref ID: 178727]

LANL [2002f]. Air samples TA-3 CMR Building 2002. Los Alamos National Laboratory, Los Alamos, 

NM: University of California. [SRDB Ref ID: 180968]

LANL [2002g]. Air samples TA-3 Building 29 July - October 2002. Los Alamos National Laboratory, 

Los Alamos, NM: University of California. [SRDB Ref ID: 180896]

LANL [2002–2003]. Fixed air samples TA-3 Building 29 Wing 2 January 2002 to January 2003. Los 

Alamos National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 180974]
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 34 of 56

LANL [2003a]. Radiological incident reports TA-48 2003. Los Alamos National Laboratory, Los 

Alamos, NM: University of California. [SRDB Ref ID: 59508] 

LANL [2003a]. Smear and semi-annual site surveys TA-53 February, March, June, August to October 

2003. Los Alamos National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 

180890]

LANL [2003b]. Smear surveys TA-53 February, March, May to July, August to December 2003. Los 

Alamos National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 180862]

LANL [2004a]. Smear surveys TA-3 Building 29 February, July to October 2004. Los Alamos National 

Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 181007]

LANL [2004b]. Radiological incident reports TA-3 Building 29 December 2003 to December 2004. Los 

Alamos National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 181206]

LANL [2004c]. Routine monthly direct and smear contamination surveys TA-3 2004. Los Alamos 

National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 178822]

LANL [2004d]. Fixed head air sample results TA-3 Building 29 2004. Los Alamos National Laboratory, 

Los Alamos, NM: University of California. [SRDB Ref ID: 178820]

LANL [2004e]. Fixed air samples TA-3 Building 29 Wing 5 2004. Los Alamos National Laboratory, Los 

Alamos, NM: University of California. [SRDB Ref ID: 180941] 

LANL [2004f]. Smear surveys TA-48 March, May to July, September, October, December 2004. Los 

Alamos National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 180928]

LANL [2004g]. Smear surveys TA-53 2004. Los Alamos National Laboratory, Los Alamos, NM: 

University of California. [SRDB Ref ID: 178821]

LANL [2004h]. HSR-1 surveys TA-53 2004. Los Alamos National Laboratory, Los Alamos, NM: 

University of California. [SRDB Ref ID: 178706]

LANL [2004i]. Air analysis reports TA-53 Building 7 2004. Los Alamos National Laboratory, Los 

Alamos, NM: University of California. [SRDB Ref ID: 178707]

LANL [2004–2005a]. Fixed air samples TA-3 Building 29 Wing 7 January 2004 to January 2005. Los 

Alamos National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 180939]

LANL [2004–2005b]. Fixed air samples TA-3 Building 29 January 2004 to January 2005. Los Alamos 

National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 180976]

LANL [2005a]. LAS, direct and smear surveys TA-3 Building 29 August to December 2005. Los 

Alamos National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 180965]

LANL [2005b]. Hot cell radiation and smear surveys TA-48 Building RC-1 January to November 2005. 

Los Alamos National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 180820]

LANL [2005–2006a]. Fixed air samples and monthly routine radiological surveys TA-3 Building 29 

January 2005 - January 2006. Los Alamos National Laboratory, Los Alamos, NM: University of 

California. [SRDB Ref ID: 180980]
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 35 of 56

LANL [2005–2006b]. Air samples TA-3 Building 29 January 2005 to January 2006. Los Alamos 

National Laboratory, Los Alamos, NM: University of California. [SRDB Ref ID: 180900]

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December 15. [SRDB Ref ID: 178819]

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Institute for Occupational Safety and Health Advisory Board on Radiation and Worker Health Los 

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[SRDB Ref ID: 184934]

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Institute for Occupational Safety and Health Advisory Board on Radiation and Worker Health Los 

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U.S. Department of Health and Human Services, Centers for Disease Control, National Institute for 

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Ref ID: 188312] 
Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 37 of 56

ATTACHMENT A 

SUPPORTING TABLES

LIST OF TABLES 

TABLE TITLE PAGE

A-1 Smear and air monitoring source documents ......................................................................... 38

A-2 Smear results exceeding contamination limits, TA-3 .............................................................. 42

A-3 Air monitoring results exceeding airborne contamination limits, TA-3 ..................................... 45

A-4 Smear results exceeding contamination limits, TA-48 ............................................................ 49

A-5 Air monitoring results exceeding airborne contamination limits, TA-48................................... 51

A-6 Smear results exceeding contamination limits, TA-53 ............................................................ 52

A-7 Air monitoring results exceeding airborne contamination limits, TA-53................................... 54
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 38 of 56

Table A-1. Smear and air monitoring source documents.

a

Year Title

SRDB 

Ref ID

1996 Air Samples TA

-53 1996 176863

1996 Smear Surveys TA

-53 May and June 1996 178723

1996 Smear Surveys TA

-53 July and August 1996 178740

1996 Smear Surveys TA

-53 August–November 1996 178790

1996 Smear Surveys TA

-53 March 29–May 17, 1996 180912

1996 Direct and Smear Surveys TA

-3 1996 180957

1996 Smear and Contamination Surveys TA

-3 1996 180987

1996 RWPs TA

-3 April–December 1996 (Ten Notable RWPs) 183626

1996 Smear Surveys TA

-53 February 13–March 29, 1996 and May 10, 1997 180906

1997 Portable Air Samples TA

-53 1997 176864

1997 Radiation and Contamination Surveys TA

-53 1997 178714

1997 Smear Surveys TA

-53 September–November 1997 and January 1998 180852

1997 Smear Surveys TA

-48 Building 1 1997 180853

1997 Air Samples TA

-48 Building 1 January–November 1997 180854

1997 Weekly and Monthly Routine Surveys TA

-48 Building 1 1997 180884

1997 Smear Surveys TA

-53 1996 180893

1997 Smear Surveys TA

-53 Third and Fourth Quarter 1997 180905

1997 Smear and Counter Surveys TA

-53 April, May, July 1997 180927

1998 Smear Survey Data TA

-48 1998 178779

1998 Hot Cell Air Samples TA

-48 1998 178786

1998 Smear and Counter Surveys TA

-53 January–April 1998 180840

1998 Air Samples TA

-48 Hot Cell December 1996–January 1998 180886

1998 Smear Surveys TA

-53 February and July 1998 180925

1998 Smear and Counter Surveys TA

-53 September–November 1998 180947

1998 Fixed Air Samples TA

-48 Building 1 1998 181015

1998 RWPs TA

-3 CY1998 (Ten Notable RWPs) Part E 181104

1998 RWPs TA

-3 CY1998 (Six Notable RWPs) Part B 181107

1998 RWPs TA

-3 CY1998 (Ten Notable RWPs) Part H 181108

1998 RWPs TA

-48 CY1998 (Three Notable RWPs) 181120

1999 Hot Cell Wing Monthly Surveys TA

-48 January–November 1999 176856

1999 Smear Surveys TA

-53 First, Second, Third Quarter 1999 178731

1999 Hot Cell Wing Air Samples TA

-48 1999 178769

1999 Monthly Routine Smear Surveys TA

-48 1999 178770

1999 RWPs TA

-53 1999 178775
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 39 of 56

Year Title

SRDB 

Ref ID

1999 Air, Contamination and Smear Surveys TA

-53 June–August 1999 180830

1999 Smear and Counter Surveys TA

-53 December 1999 180841

1999 Smear and Counter Surveys TA

-53 May, June, July 1999 180843

1999 Smear and Counter Surveys TA

-53 January–April 1999 180846

1999 Smear and Counter Surveys TA

-53 July–October 1999 180847

1999 Smear and Contamination Surveys TA

-3 January 1999–January 2000 180849

1999 Smear Surveys TA

-3 January–September, November, December 1999 180850

1999 Smear Surveys TA

-3 Building 2008-2010, 1734, 130, SM-65 August–September 1999 180982

1999 Fixed Contamination, Direct, Smear and Nasal Surveys TA

-3 Building 29 Wing 5 1999 180992

1999 Giraffe Air Samples TA

-53 1999 180993

1999 Radiation and Contamination, Low Current Target, Direct, LAS, Smear, Counter Surveys TA

-53 1999 181000

1999 RWPs TA

-3 CY1999 (Four Notable RWPs) 181031

1999 RWPs TA

-3 CY1999 (Ten Notable RWPs) 183678

2000 Smear Surveys TA

-53 2000 176870

2000 Fixed Air Head Results TA

-3 CMR 2000 178725

2000 Fixed Head Air Sample Results TA

-3 2000 178736

2000 Air Sample Results TA

-3 Building 29 2000 178801

2000 Radiological Surveys TA

-3 Building 29 2000 178803

2000 Giraffe Air Samples TA

-53 2000 178812

2000 Radiological Incident Reports, Nasal Swipes, Smear, LAS and Direct Surveys TA

-3 Building 29 180915

2000 Air Samples TA

-3 Building 29 Wing 2 December 1999 and January, April–November 2000 180916

2000 Air Samples TA

-3 Building 29 2000 180930

2000 Air Samples TA

-3 Building 2000 180950

2000 Smear, Counter, Radiation and Contamination Surveys TA

-53 April, May, July–September 2000 180971

2000 Fixed Head Air Samples TA

-3 Building 29 Wing 4 2000 181009

2000 Smear and Counter Surveys TA

-53 February–May 2000 181010

2000 Fixed Head Air Samples TA

-3 Building 29 Wing 7 2000 181343

2001 Smear Surveys TA

-53 February, March, July, August, October 2001 180863

2001 Fixed Air Samples and Radiological Surveys TA

-3 Building 29 January–September 2001 180903

2001 Air Samples and CAM Filter Surveys TA

-53 Building 29 2001 180907

2001 Air and Smear Samples TA

-3 Building 29 2001 180917

2001 Air Samples TA

-3 Building 29 2001 180945

2001 Smear and Counter Surveys TA

-53 Building 3 May–December 2001 180949

2001 Air Samples TA

-3 Building 29 Wing 7 2001 180986

2001 Air Samples TA

-3 Building 29 Wing 5 2001 181005
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 0

0 Effective Date: 03/01/2022 Page 40 of 56

Year Title

SRDB 

Ref ID

2002 Fixed Head Air Sample Results TA-3 CMR 2002 178716

2002 Fixed Head Air Sample Results TA-3 Building 29 2002 178727

2002 Smear and LAS Surveys TA-53 March, April, December 2002 180871

2002 Smear and LAS Surveys TA-53 August–December 2002 180875

2002 Smear and Counter Surveys TA-53 January–April 2002 180887

2002 Air Samples TA-3 Building 29 July–October 2002 180896

2002 Air Samples TA-3 Building 29 2001 and January 2002 180913

2002 Air Samples TA-3 Building 29 2002 180958

2002 Air Samples TA-3 CMR Building 2002 180968

2002 Fixed Air Samples TA-3 Building 29 Wing 2 2002 180974

2002 Air Surveys TA-3 Building 29 2002 181011

2002 Smear and LAS Surveys TA-53 May–August, November, December 2002 181027

2002 UCNI - Smear Surveys Performed in TA-3 2002 183590

2003 Direct, Smear, Radiological Surveys TA-3 2003 178818

2003 Direct, Smear, Radiation Routine Monthly Surveys TA-3 2003 178887

2003 Smear Surveys TA-53 February, March, May–July, August–December 2003 180862

2003 Smear Surveys TA-53 February, March, April 2003 180864

2003 Smear Surveys TA-53 2003 180889

2003 Smear and Semi-Annual Site Surveys TA-53 February, March, June, August–October 2003 180890

2003 Air Samples TA-3 2002 and January 2003 180904

2004 HSR-1 Smear Surveys TA-53 2004 178706

2004 Air Analysis Reports TA-53 Building 7 2004 178707

2004 Direct, Smear, Radiological Surveys TA-3 2004 178817

2004 Fixed Head Air Sample Results TA-3 Building 29 2004 178820

2004 Smear Surveys TA-53 2004 178821

2004 Routine Monthly Direct and Smear Contamination Surveys TA-3 2004 178822

2004 Air Samples TA-48 RC-1 Alpha Wing January–March 2004 180922

2004 Smear and External Radiation Surveys TA-48 Alpha and Dissolving Wings January–March, June, December 2004 180923

2004 Smear Surveys TA-48 March, May–July, September, October, December 2004 180928

2004 Fixed Air Samples TA-3 Building 29 Wing 7 2004 180939

2004 Fixed Air Samples TA-3 Building 29 Wing 5 2004 180941

2004 Fixed Air Samples TA-3 Building 29 2004 180969

2004 Fixed Air Samples TA-3 Building 29 2004 180976

2004 Monthly Routine Radiological Surveys TA-3 Building 29 Wing 2 May, June, September–December 2004 180978

2004 Fixed Head Air Samples TA-3 2004 181006
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 0

0 Effective Date: 03/01/2022 Page 41 of 56

Year Title

SRDB 

Ref ID

2004 Smear Surveys TA-3 Building 29 February, July–October 2004 181007

2004 UCNI - RWPs TA-3 February–December 2004 181147

2004 Radiological Incident Reports TA-3 Building 29 2004 181206

2005 Hot Cell Radiation and Smear Surveys TA-48 Building RC-1 January–November 2005 180820

2005 Air Samples TA-3 Building 29 January 2005–January 2006 180900

2005 Routine Monthly Direct, Smears and Tritium Contamination Surveys TA-3 Buildings 180909

2005 Fixed Air Samples TA-3 Building 29 Wing 3 180943

2005 Daily RCA Exit Large Area Swipe, Smear and Direct Surveys and RWPs TA-3 Building 29 Wing 3 2005 180948

2005 Smear Surveys TA-53 January, March, April, September, December 2005 180961

2005 LAS, Direct and Smear Surveys TA-3 Building 29 August–December 2005 180965

2005 Fixed Air Samples and Monthly Routine Radiological Surveys TA-3 Building 29 2005 180980

2005 Smear Surveys TA-53 Building 7 January, February, April, June–September, November 2005 180989

2005 Smear and Radiological Surveys TA-53 Building 54 July 2005 180990

2005 Smear, LAS and Radiological Surveys TA-53 January, February, May, September, October 2005 180991

1995–2005 Smear and Air Samples TA-3 Building 29 Wing 7 1995-2005 180834

1996–1997 Smear and Counter Surveys TA-53 February and March 1996 and March 1997 180955

1997–1998 Direct and Smear Surveys TA-3, TA-48, TA-59 December 1997–December 1998 181014

1997–1998 RWPs TA-3 November 1997–March 1998 (Ten Notable RWPs) 183637

1998–1999 RWPs TA-3 October 1998–December 1999 (Ten Notable RWPs) 183683

1999–2000 Smear and Counter Surveys TA-53 December 1999–February 2000 181013

2004–2005 Fixed Air Samples TA-3 Building 29 October 2004–January 2005 180964

a. UCNI = uncontrolled classified nuclear information.
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 0

0 Effective Date: 03/01/2022 Page 42 of 56

Table A-2. Smear results exceeding contamination limits, TA-3.

Date

Building 

number Location

Primary 

source

Number of 

results

Exceeded 

lower limit 

alpha

Exceeded 

upper limit 

alpha

Exceeded 

lower limit 

beta

Exceeded 

upper limit 

beta Source Page

06/24/1996 66 B-100 SNM 60 5 1 1 0 LANL 1996a 95

11/18/1997 29 7111-7115 Actinides 216 2 0 0 0 LANL 1997–1998a 32

12/17/1997 2008 309 SNM 100 2 1 0 0 LANL 1997–1999 10

04/22/1998 29 5133 Pu 65 3 0 0 0 LANL 1998b 45

07/30/1998 29 5114 Actinides 50 3 0 0 0 LANL 1998c 49

08/21/1998 29 4062 SNM 50 25 1 0 0 LANL 1997–1999 171

01/05/1999 66 B-100 SNM 20 4 0 0 0 LANL 1999d 207

01/11/1999 66 B-100 SNM 20 8 0 2 0 LANL 1999d 203

01/19/1999 66 B-100 SNM 20 3 0 0 0 LANL 1999d 199

01/25/1999 66 B-100 SNM 20 7 0 0 0 LANL 1999d 195

01/28/1999 66 B-100 SNM 90 13 1 1 0 LANL 1999–2000a 174

02/01/1999 66 B-100 SNM 20 18 3 11 0 LANL 1999d 191

02/09/1999 66 B-100 SNM 20 10 3 5 0 LANL 1999d 187

02/17/1999 66 B-100 SNM 20 19 5 11 0 LANL 1999d 183

02/24/1999 66 B-100 SNM 20 8 0 3 0 LANL 1999d 179

02/26/1999 66 B-100 SNM 75 2 0 0 0 LANL 1999–2000a 159

03/01/1999 66 B-100 SNM 20 8 0 2 0 LANL 1999d 175

03/09/1999 66 B-100 SNM 20 11 0 5 0 LANL 1999d 171

03/15/1999 66 B-100 SNM 20 10 0 0 0 LANL 1999d 166

03/22/1999 66 B-100 SNM 20 9 0 0 0 LANL 1999d 162

03/29/1999 66 B-100 SNM 20 3 0 1 0 LANL 1999d 158

03/30/1999 35 101 DU 80 1 0 0 0 LANL 1999–2000a 20

04/05/1999 66 B-100 SNM 20 2 0 1 0 LANL 1999d 154

04/12/1999 66 B-100 SNM 20 3 0 0 0 LANL 1999d 150

04/19/1999 29 2114 Actinides 20 4 0 1 0 LANL 1999d 146

04/26/1999 66 B-100 SNM 20 3 0 1 0 LANL 1999d 142

05/03/1999 66 B-100 SNM 20 5 0 1 0 LANL 1999d 138

05/10/1999 29 4062, 4968 SNM 20 3 0 2 0 LANL 1999d 134

05/17/1999 66 drums SNM 20 5 0 0 0 LANL 1999d 126

05/24/1999 66 B-100 SNM 20 5 0 2 0 LANL 1999d 122

06/01/1999 66 B-100 SNM 20 7 0 3 0 LANL 1999d 130

06/07/1999 66 B-100 SNM 20 3 0 1 0 LANL 1999d 118

06/15/1999 66 B-100 SNM 110 2 0 0 0 LANL 1999–2000a 124

06/24/1999 66 B-100 SNM 20 7 0 2 0 LANL 1999d 111
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 0

0 Effective Date: 03/01/2022 Page 43 of 56

Date

Building 

number Location

Primary 

source

Number of 

results

Exceeded 

lower limit 

alpha

Exceeded 

upper limit 

alpha

Exceeded 

lower limit 

beta

Exceeded 

upper limit 

beta Source Page

06/28/1999 66 B-100 SNM 20 3 0 0 0 LANL 1999d 107

07/06/1999 66 B-100 SNM 20 7 0 2 0 LANL 1999d 103

07/12/1999 66 B-100 SNM 20 5 0 0 0 LANL 1999d 99

07/14/1999 66 B-100 SNM 110 3 0 1 0 LANL 1999–2000a 107

07/19/1999 66 B-100 SNM 20 8 0 0 0 LANL 1999d 95

07/26/1999 66 B-100 SNM 20 3 0 0 0 LANL 1999d 91

08/02/1999 66 B-100 SNM 20 5 0 0 0 LANL 1999d 87

08/09/1999 66 B-100 SNM 20 7 0 1 0 LANL 1999d 83

08/16/1999 66 B-100 SNM 20 7 1 1 0 LANL 1999d 79

08/24/1999 66 B-100 SNM 20 4 0 0 0 LANL 1999d 75

08/25/1999 66 B-100 SNM 98 1 0 0 0 LANL 1999–2000a 90

08/30/1999 66 B-100 SNM 20 4 0 0 0 LANL 1999d 71

09/01/1999 29 7128 Actinides 60 10 0 0 0 LANL 1998–1999a 165

09/07/1999 66 B-100 SNM 20 4 0 0 0 LANL 1999d 67

09/13/1999 66 B-100 SNM 20 6 0 1 0 LANL 1999d 63

09/20/1999 66 B-100 SNM 20 3 0 1 0 LANL 1999d 59

09/21/1999 66 B-100 SNM 98 2 0 0 0 LANL 1999–2000a 73

09/27/1999 66 B-100 SNM 20 3 0 1 0 LANL 1999d 43

09/27/1999 29 5120 Actinides 50 1 0 0 0 LANL 1999e 89

09/29/1999 29 5116 Actinides 56 4 0 0 0 LANL 1999e 84

10/04/1999 66 B-100 SNM 20 3 0 2 0 LANL 1999d 55

10/12/1999 66 B-100 SNM 20 3 0 0 0 LANL 1999d 51

10/18/1999 66 B-100 SNM 20 3 0 0 0 LANL 1999d 47

10/25/1999 66 B-100 SNM 20 4 0 3 0 LANL 1999d 39

11/01/1999 66 B-100 SNM 20 7 1 5 0 LANL 1999d 25

11/03/1999 29 5116 Actinides 56 4 0 0 0 LANL 1999e 79

11/08/1999 66 B-100 SNM 20 7 0 5 0 LANL 1999d 35

11/10/1999 29 5023 Actinides 40 34 1 0 0 LANL 1999e 3

11/15/1999 66 B-100 SNM 20 10 0 3 0 LANL 1999d 30

11/22/1999 66 B-100 SNM 20 10 0 2 0 LANL 1999d 21

11/29/1999 66 B-100 SNM 20 8 0 0 0 LANL 1999d 7

12/07/1999 66 B-100 SNM 20 13 0 6 0 LANL 1999d 17

12/13/1999 66 B-100 SNM 20 17 0 10 0 LANL 1999d 13

12/20/1999 66 B-100 SNM 20 11 0 9 0 LANL 1999d 11

12/21/1999 66 B-100 SNM 98 9 1 0 0 LANL 1999–2000a 2
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 0

0 Effective Date: 03/01/2022 Page 44 of 56

Date

Building 

number Location

Primary 

source

Number of 

results

Exceeded 

lower limit 

alpha

Exceeded 

upper limit 

alpha

Exceeded 

lower limit 

beta

Exceeded 

upper limit 

beta Source Page

01/06/2000 66 B-100 SNM 20 10 0 3 0 LANL 1999d 2

01/25/2000 66 B-100 SNM 98 6 1 0 0 LANL 1999–2000b 37

04/05/2000 29 5111 Pu 100 3 0 0 0 LANL 2000c 446

04/05/2000 29 5118 Pu 100 3 1 0 0 LANL 2000c 466

04/13/2000 29 2131 Uranium 80 3 0 0 0 LANL 2000b 8

04/17/2000 29 2114 Actinides 90 7 1 0 0 LANL 2000b 16

04/18/2000 29 2129 Actinides 55 1 0 0 0 LANL 2000b 42

05/26/2000 29 5008 Actinides 50 1 0 0 0 LANL 2000c 476

08/16/2000 29 2114, 2129 Actinides 5 1 1 0 0 LANL 2000d 307

09/08/2000 29 2118 SNM 100 10 2 0 0 LANL 2000d 222

12/13/2000 29 S010 Actinides 30 3 0 0 0 LANL 2000e 107

12/13/2000 29 5047 Pu 100 1 0 0 0 LANL 2000c 434

06/14/2001 29 2124 Actinides 100 3 0 0 0 LANL 2001a 395

12/21/2001 29 2128 Actinides 100 2 0 0 0 LANL 2001a 386

02/04/2004 29 4130 SNM 20 1 0 0 0 LANL 2004a 53

06/30/2004 29 Wing 3 Actinides 66 4 1 0 0 LANL 2004a 650

07/09/2004 29 3034 SNM 15 6 0 0 0 LANL 2004b 655

07/13/2004 29 vaults Uranium 48 2 0 0 0 LANL 2004b 105

07/30/2004 2008 124 SNM 65 1 0 0 0 LANL 2004b 71

08/03/2004 29 4110 SNM 100 1 0 0 0 LANL 2004b 716

08/10/2004 29 4125, 4131 SNM 100 4 0 0 0 LANL 2004c 707

08/13/2004 29 4023 SNM 77 12 1 0 0 LANL 2004c 19

09/23/2004 29 4295 SNM 70 8 0 0 0 LANL 2004c 58

09/23/2004 29 4069 SNM 100 5 0 0 0 LANL 2004c 86

09/27/2004 29 4117, 4195 SNM 100 3 0 0 0 LANL 2004c 70

09/28/2004 29 4062, 4968 SNM 100 7 0 0 0 LANL 2004c 78

01/03/2005 29 2112 Actinides 18 1 0 0 0 LANL 2005–2006a 336

01/11/2005 29 2136 Actinides 18 1 0 0 0 LANL 2005–2006a 344

06/24/2005 29 2129 Actinides 15 1 1 0 0 LANL 2005–2006a 319

08/08/2005 29 4034, 4064 SNM 100 2 0 0 0 LANL 2005a 142

08/08/2005 29 4137 SNM 100 1 0 0 0 LANL 2005a 136

08/10/2005 29 4964 SNM 20 1 0 0 0 LANL 2005a 150

08/15/2005 29 4034 SNM 20 1 0 0 0 LANL 2005a 153

08/19/2005 29 4034 SNM 10 2 0 0 0 LANL 2005a 157
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 0

0 Effective Date: 03/01/2022 Page 45 of 56

Table A-3. Air monitoring results exceeding airborne contamination limits, TA-3. 

Date

Building 

number Location Primary source

Number of 

results

Exceeded 

limit alpha

Exceeded 

limit beta Source Page

01/26/2000 29 Wing 5 Actinides 67 1 0 LANL 2000c 187

02/02/2000 29 Wing 2 Actinides 67 3 0 LANL 2000c 195

02/02/2000 29 Wing 5 Actinides 62 3 0 LANL 2000d 257

02/09/2000 29 Wing 5 Actinides 67 3 0 LANL 2000c 2

02/16/2000 29 Wing 5 Actinides 67 3 0 LANL 2000c 10

03/01/2000 29 Wing 5 Actinides 67 2 0 LANL 2000c 26

03/15/2000 29 Wing 5 Actinides 68 1 0 LANL 2000c 42

03/15/2000 29 Wing 9 MAP/MFP/Actinides 28 1 0 LANL 1999–2001 21

03/15/2000 29 Wing 7 Actinides 58 1 0 LANL 2000–2001 127

03/22/2000 29 Wing 7 Actinides 58 6 0 LANL 2000–2001 145

04/12/2000 29 Wing 9 MAP/MFP/Actinides 28 1 0 LANL 1999–2001 12

04/12/2000 29 Wing 2 Actinides 64 1 0 LANL 1999–2000c 147

04/19/2000 29 Wing 2 Actinides 64 1 0 LANL 2000d 216

04/26/2000 29 Wing 2 Actinides 64 3 0 LANL 2000d 213

05/31/2000 29 Wing 2 Actinides 64 3 0 LANL 2000d 182

06/14/2000 29 Wing 5 Actinides 68 1 0 LANL 2002d 129

06/21/2000 29 Wing 5 Actinides 68 1 0 LANL 2000c 137

06/28/2000 29 Wing 5 Actinides 68 1 0 LANL 2000c 203

10/11/2000 29 Wing 9 MAP/MFP/Actinides 28 2 0 LANL 1999–2001 2

10/18/2000 29 Wing 5 Actinides 69 2 0 LANL 2000c 322

11/01/2000 29 Wing 5 Actinides 69 2 0 LANL 2000c 336

11/15/2000 29 Wing 7 Actinides 58 1 0 LANL 2000–2001 11

12/20/2000 29 Wing 5 Actinides 69 1 0 LANL 2001b 87

01/03/2001 29 Wing 5 Actinides 69 2 0 LANL 2001b 80

01/24/2001 29 Wing 5 Actinides 69 1 0 LANL 2001b 59

02/28/2001 29 Wing 5 Actinides 69 1 0 LANL 2001b 23

03/07/2001 29 Wing 2 Actinides 64 1 0 LANL 2001b 250

03/14/2001 29 Wing 5 Actinides 69 1 0 LANL 2001a 9

04/04/2001 29 Wing 5 Actinides 69 1 0 LANL 2001b 185

04/25/2001 29 Wing 5 Actinides 69 2 0 LANL 2001b 163

05/02/2001 29 Wing 5 Actinides 69 1 0 LANL 2001b 155

05/09/2001 29 Wing 2 Actinides 64 1 0 LANL 2001a 185

05/09/2001 29 Wing 4 SNM 10 1 0 LANL 2001c 69

05/09/2001 29 Wing 9 MAP/MFP/Actinides 28 2 0 LANL 2001–2002a 115

05/16/2001 29 Wing 2 Actinides 64 1 0 LANL 2001b 178
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 46 of 56

Date

Building 

number Location Primary source

Number of 

results

Exceeded 

limit alpha

Exceeded 

limit beta Source Page

05/23/2001 29 Wing 9 MAP/MFP/Actinides 2820 LANL 2001–2002a 111

05/30/2001 29 Wing 5 Actinides 6910 LANL 2001b 123

06/06/2001 29 Wing 5 Actinides 6910 LANL 2001b 115

06/06/2001 29 Wing 9 MAP/MFP/Actinides 2810 LANL 2001–2002a 107

06/20/2001 29 Wing 5 Actinides 6920 LANL 2001a 94

06/27/2001 29 Wing 2 Actinides 6610 LANL 2001b 134

06/27/2001 29 Wing 4 SNM 1020 LANL 2001c 53

07/04/2001 29 Wing 5 Actinides 6920 LANL 2001b 287

07/11/2001 29 Wing 9 MAP/MFP/Actinides 2810 LANL 2001–2002a 91

07/18/2001 29 Wing 5 Actinides 6910 LANL 2001b 271

07/25/2001 29 Wing 5 Actinides 6910 LANL 2001b 263

08/01/2001 29 Wing 5 Actinides 6920 LANL 2001b 255

08/15/2001 29 Wing 7 Actinides 5810 LANL 2001–2002b 92

08/22/2001 29 Wing 2 Actinides 6410 LANL 2001b 94

08/29/2001 29 Wing 7 Actinides 5810 LANL 2001–2002b 82

09/05/2001 29 Wing 7 Actinides 5810 LANL 2001–2002b 77

09/12/2001 29 Wing 5 Actinides 6910 LANL 2001b 207

09/12/2001 29 Wing 7 Actinides 5830 LANL 2001–2002b 70

09/12/2001 29 Wing 3 Actinides 3220 LANL 2001–2002c 51

09/19/2001 29 Wing 5 Actinides 6910 LANL 2001b 199

10/03/2001 29 Wing 5 Actinides 6910 LANL 2001b 372

10/10/2001 29 Wing 5 Actinides 6910 LANL 2001b 364

10/10/2001 29 Wing 7 Actinides 5810 LANL 2001–2002b 38

10/10/2001 29 Wing 2 Actinides 6410 LANL 2001a 55

10/24/2001 29 Wing 2 Actinides 6410 LANL 2001a 49

11/20/2001 29 Wing 5 Actinides 6910 LANL 2001b 324

12/12/2001 29 Wing 7 Actinides 6010 LANL 2001–2002b2

01/09/2002 29 Wing 7 Actinides 6010 LANL 2001–2002b 261

02/06/2002 29 Wing 7 Actinides 6020 LANL 2001–2002b 240

02/13/2002 29 Wing 9 MAP/MFP/Actinides 2810 LANL 2002d 176

02/27/2002 29 Wing 2 Actinides 6410 LANL 2002–2003 229

03/06/2002 29 Wing 5 Actinides 6910 LANL 2002e 277

03/20/2002 29 Wing 7 Actinides 6010 LANL 2001–2002b 208

04/03/2002 29 Wing 5 Actinides 6910 LANL 2002e 249

04/10/2002 29 Wing 2 Actinides 6410 LANL 2002–2003 196

05/08/2002 29 Wing 5 Actinides 6910 LANL 2002e 214
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 47 of 56

Date

Building 

number Location Primary source

Number of 

results

Exceeded 

limit alpha

Exceeded 

limit beta Source Page

05/29/2002 29 Wing 9 MAP/MFP/Actinides 2810 LANL 2001–2002b 112

05/29/2002 29 Wing 7 Actinides 6160 LANL 2002d 155

06/05/2002 29 Wing 2 Actinides 6410 LANL 2002–2003 156

06/12/2002 29 Wing 7 Actinides 6170 LANL 2001–2002b 144

06/19/2002 29 Wing 5 Actinides 6910 LANL 2002e 169

07/03/2002 29 Wing 7 Actinides 6110 LANL 2001–2002b 128

07/03/2002 29 Wing 2 Actinides 6410 LANL 2002–2003 127

07/10/2002 29 Wing 2 Actinides110 LANL 2002–2003 133

07/10/2002 29 Wing 7 Actinides 6110 LANL 2001–2002b 122

07/24/2002 29 Wing 5 Actinides 6910 LANL 2002e 138

07/24/2002 29 Wing 3 Actinides 3210 LANL 2001–2002b6

07/31/2002 29 Wing 9 MAP/MFP/Actinides 2910 LANL 2002d 79

07/31/2002 29 Wing 2 Actinides 6520 LANL 2001–2002b 104

08/07/2002 29 Wing 9 MAP/MFP/Actinides 2930 LANL 2002d 75

08/07/2002 29 Wing5 Actinides 6910 LANL 2002e 122

08/14/2002 29 Wing 7 Actinides 6120 LANL 2001–2002b 97

08/21/2002 29 Wing 5 Actinides 6910 LANL 2002e 108

08/28/2002 29 Wing 7 Actinides 2910 LANL 2002d 64

09/04/2002 29 Wing 7 MAP/MFP/Actinides 6110 LANL 2001–2002b 82

09/04/2002 29 Wing 9 MAP/MFP/Actinides 2910 LANL 2002d 60

09/11/2002 29 Wing 7 Actinides 6130 LANL 2001–2002b 76

09/18/2002 29 Wing 9 MAP/MFP/Actinides 2910 LANL 2002d 52

09/18/2002 29 Wing 9 MAP/MFP/Actinides 6110 LANL 2001–2002b 70

09/25/2002 29 Wing 9 MAP/MFP/Actinides 2920 LANL 2002d 48

09/25/2002 29 Wing 7 Actinides 6130 LANL 2001–2002b 64

09/25/2002 29 Wing 2 Actinides 6510 LANL 2002–2003 63

10/02/2002 29 Wing 9 Actinides 2920 LANL 2002d 44

10/02/2002 29 Wing 7 MAP/MFP/Actinides 6120 LANL 2001–2002b 58

10/09/2002 29 Wing 9 MAP/MFP/Actinides 2920 LANL 2002–2003 40

10/09/2002 29 Wing 7 Actinides 6110 LANL 2001–2002b 53

10/09/2002 29 Wing 2 Actinides 6510 LANL 2002–2003 52

10/23/2002 29 Wing 7 Actinides 6140 LANL 2001–2002b 42

10/30/2002 29 Wing 9 MAP/MFP/Actinides 2910 LANL 2002–2003 32

10/30/2002 29 Wing 7 MAP/MFP/Actinides 6110 LANL 2001–2002b 37

11/20/2002 29 Wing 5 Actinides 6910 LANL 2002e 18

11/27/2002 29 Wing 9 MAP/MFP/Actinides 2910 LANL 2002–2003 14
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 48 of 56

Date

Building 

number Location Primary source

Number of 

results

Exceeded 

limit alpha

Exceeded 

limit beta Source Page

12/11/2002 29 Wing 9 MAP/MFP/Actinides 2910 LANL 2002–20036

01/21/2004 29 Wing 3 Actinides 3610 LANL 2004d 12

01/28/2004 29 Wing 3 Actinides 3520 LANL 2004b 79

04/14/2004 29 Wing 7 Actinides 6710 LANL 2004–2005a 142

10/20/2004 29 Wing 5 Actinides 6910 LANL 2004e 34

11/03/2004 29 Wing 5 Actinides 6910 LANL 2004e 26

12/01/2004 29 Wing 2 Actinides 6610 LANL 2004–2005b 10

02/16/2005 29 Wing 2 Actinides 6610 LANL 2005–2006a 30

03/09/2005 29 Wing 2 Actinides 6610 LANL 2005–2006a 43

05/04/2005 29 Wing 5 Actinides 6910 LANL 2005–2006b 135

10/05/2005 29 Wing 5 Actinides 6910 LANL 2005–2006b 46

11/09/2005 29 Wing 2 Actinides 6610 LANL 2005–2006a 257
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 0

0 Effective Date: 03/01/2022 Page 49 of 56

Table A-4. Smear results exceeding contamination limits, TA-48.

Date

Building 

number Location Primary source

Number 

of 

results

Exceeded 

lower 

limit 

alpha

Exceeded 

upper 

limit 

alpha

Exceeded 

lower 

limit beta

Exceeded 

upper 

limit beta Source Page

02/04/1997 RC-1 423, 430 MAP/MFP/Actinides 53 1 0 0 0 LANL 1997b 460

03/13/1997 RC-1 Hot Cell MAP/MFP/Actinides 46 1 0 0 0 LANL 1997b 629

04/02/1997 RC-1 Hot Cell MAP/MFP/Actinides 46 1 0 0 0 LANL 1997b 634

05/29/1997 RC-1 Hot Cell MAP/MFP/Actinides 46 1 1 1 0 LANL 1997b 639

06/18/1997 RC-1 Hot Cell MAP/MFP/Actinides 46 1 0 0 0 LANL 1997b 646

06/25/1997 RC-1 423, 430 MAP/MFP/Actinides 50 0 0 1 0 LANL 1997b 480

07/24/1997 RC-1 Hot Cell MAP/MFP/Actinides 46 1 0 0 0 LANL 1997b 651

08/06/1997 RC-1 Hot Cell MAP/MFP/Actinides 46 1 0 0 0 LANL 1997b 656

09/25/1997 RC-1 305 MAP/MFP/Actinides 36 1 0 0 0 LANL 1997b 92

09/25/1997 RC-1 312 MAP/MFP/Actinides 17 1 0 0 0 LANL 1997b 96

09/25/1997 RC-1 309 MAP/MFP/Actinides 40 1 0 0 0 LANL 1997b 145

09/25/1997 RC-1 306 MAP/MFP/Actinides 38 2 0 0 0 LANL 1997b 204

09/30/1997 RC-1 412 MAP/MFP/Actinides 28 1 0 0 0 LANL 1997b 244

09/30/1997 RC-1 408 MAP/MFP/Actinides 32 2 0 0 0 LANL 1997b 278

09/30/1997 RC-1 421 MAP/MFP/Actinides 18 1 0 0 0 LANL 1997b 356

09/30/1997 RC-1 308 MAP/MFP/Actinides 29 1 0 0 0 LANL 1997b 444

10/26/1997 RC-1 308 MAP/MFP/Actinides 32 1 0 0 0 LANL 1997b 136

10/28/1997 RC-1 305 MAP/MFP/Actinides 36 2 0 0 0 LANL 1997b 79

10/29/1997 RC-1 402 MAP/MFP/Actinides 16 1 0 0 0 LANL 1997b 164

10/29/1997 RC-1 312 MAP/MFP/Actinides 38 1 1 0 0 LANL 1997b 196

10/30/1997 RC-1 421 MAP/MFP/Actinides 28 1 0 0 0 LANL 1997b 256

10/31/1997 RC-1 309 MAP/MFP/Actinides 29 1 0 0 0 LANL 1997b 440

11/19/1997 RC-1 Hot Cell MAP/MFP/Actinides 70 3 0 0 0 LANL 1997b 679

11/25/1997 RC-1 309 MAP/MFP/Actinides 36 1 0 0 0 LANL 1997b 153

11/25/1997 RC-1 310 MAP/MFP/Actinides 16 1 0 0 0 LANL 1997b 167

11/25/1997 RC-1 402 MAP/MFP/Actinides 28 1 0 0 0 LANL 1997b 252

11/26/1997 RC-1 409 MAP/MFP/Actinides 16 1 0 0 0 LANL 1997b 302

11/26/1997 RC-1 415 MAP/MFP/Actinides 28 1 0 0 0 LANL 1997b 397

11/26/1997 RC-1 421 MAP/MFP/Actinides 29 1 0 0 0 LANL 1997b 448

12/01/1997 RC-1 Hot Cell MAP/MFP/Actinides 70 5 0 0 0 LANL 1997b 684

12/17/1997 RC-1 312 MAP/MFP/Actinides 32 1 0 0 0 LANL 1997b 190

01/06/1998 RC-1 409 MAP/MFP/Actinides 32 2 1 0 0 LANL 1997b 155

12/18/1997 RC-1 402 MAP/MFP/Actinides 28 1 0 0 0 LANL 1997b 248
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 0

0 Effective Date: 03/01/2022 Page 50 of 56

Date

Building 

number Location Primary source

Number 

of 

results

Exceeded 

lower 

limit 

alpha

Exceeded 

upper 

limit 

alpha

Exceeded 

lower 

limit beta

Exceeded 

upper 

limit beta Source Page

12/18/1997 RC-1 415 MAP/MFP/Actinides 28 1 0 0 0 LANL 1997b 393

12/19/1997 RC-1 409 MAP/MFP/Actinides 15 1 0 0 0 LANL 1997b1 228

12/19/1997 RC-1 421 MAP/MFP/Actinides 32 1 0 0 0 LANL 1997b 231

12/19/1997 RC-1 421 MAP/MFP/Actinides 16 1 0 0 0 LANL 1997b 298

12/19/1997 RC-1 6 MAP/MFP/Actinides 29 1 1 0 0 LANL 1997b 452

01/04/1999 RC-1 Hot Cell MAP/MFP/Actinides 70 0 0 1 0 LANL 1999f 2

03/01/1999 RC-1 Hot Cell MAP/MFP/Actinides 79 1 0 8 0 LANL 1999f 16

04/01/1999 RC-1 423 MAP/MFP/Actinides 60 1 0 0 0 LANL 1999g 21

04/08/1999 RC-1 Hot Cell MAP/MFP/Actinides 70 2 0 0 0 LANL 1999f 22

05/03/1999 RC-1 Warm Corridor MAP/MFP/Actinides 10 0 0 10 0 LANL 1999f 80

06/01/1999 RC-1 313 MAP/MFP/Actinides 50 1 0 0 0 LANL 1999g 247

07/01/1999 RC-1 Hot Cell MAP/MFP/Actinides 70 0 0 2 0 LANL 1999f 36

07/01/1999 RC-1 Warm Corridor MAP/MFP/Actinides 10 0 0 9 0 LANL 1999f 82

08/03/1999 RC-1 Hot Cell MAP/MFP/Actinides 70 0 0 1 0 LANL 1999f 45

08/03/1999 RC-1 423, 430 MAP/MFP/Actinides 10 0 0 8 0 LANL 1999f 85

09/01/1999 RC-1 606 MAP/MFP/Actinides 60 1 0 0 0 LANL 1999g 46

10/01/1999 RC-1 Warm Corridor MAP/MFP/Actinides 10 0 0 9 0 LANL 1999f 61

10/01/1999 RC-1 606 MAP/MFP/Actinides 50 1 0 1 0 LANL 1999g 188

09/16/2004 RC-1 413 MAP/MFP/Actinides 95 1 0 0 0 LANL 2004f 2

12/08/2004 RC-1 413 MAP/MFP/Actinides 95 1 0 0 0 LANL 2004f 21

05/31/2005 RC-1 314 MAP/MFP/Actinides 40 1 0 0 0 LANL 2005b 57

07/26/2005 RC-1 315 MAP/MFP/Actinides 50 0 0 1 0 LANL 2005b 70

09/28/2005 RC-1 305 MAP/MFP/Actinides 50 0 0 2 0 LANL 2005b 99
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 0

0 Effective Date: 03/01/2022 Page 51 of 56

Table A-5. Air monitoring results exceeding airborne contamination limits, TA-48.

Date

Building 

number Location Primary source

Number of 

results

Exceeded limit 

alpha

Exceeded limit 

beta Source Page

03/18/1997 RC-1 Hot Cell MAP/MFP/Actinides 18 1 0 LANL 1996–1998 172

05/27/1997 RC-1 Hot Cell MAP/MFP/Actinides 4 3 0 LANL 1996–1998 301

08/05/1997 RC-1 Hot Cell MAP/MFP/Actinides 18 5 0 LANL 1996–1998 222

10/01/1997 RC-1 Hot Cell MAP/MFP/Actinides 18 3 0 LANL 1996–1998 235

11/05/1997 RC-1 Area A MAP/MFP/Actinides 18 1 0 LANL 1996–1998 239

01/05/1998 RC-1 Hot Cell MAP/MFP/Actinides 18 3 0 LANL 1998e 6

01/28/1998 RC-1 Hot Cell MAP/MFP/Actinides 18 4 0 LANL 1998e 11

02/17/1998 RC-1 606 MAP/MFP/Actinides 15 4 0 LANL 1998–1999b 30

03/01/1999 RC-1 Hot Cell MAP/MFP/Actinides 18 4 0 LANL 1999h 12

08/03/1999 RC-1 Hot Cell MAP/MFP/Actinides 18 1 0 LANL 1999h 31
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 0

0 Effective Date: 03/01/2022 Page 52 of 56

Table A-6. Smear results exceeding contamination limits, TA-53.a

Date

Building 

number Location Primary source

Number 

of 

results

Exceeded 

lower 

limit 

alpha

Exceeded 

upper 

limit 

alpha

Exceeded 

lower 

limit beta

Exceeded 

upper 

limit beta Source Page

01/04/1996 MPF-3M Area A MAP/Actinides 60 0 0 1 0 LANL 1996–1997a 70

01/09/1996 MPF-20 Calibration MAP/Actinides 2 1 0 0 0 LANL 1996–1997b 479

01/30/1996 MPF-1 sample tank MAP/Actinides 8 1 0 0 0 LANL 1996–1997a 540

02/01/1996 MPF-3M Area A MAP/Actinides 26 7 1 4 0 LANL 1996–1997a 574

02/02/1996 MPF-3M Area A MAP/Actinides 16 1 0 0 0 LANL 1996–1997a 622

02/06/1996 MPF-3M Area A MAP/Actinides 50 0 0 1 0 LANL 1996–1997a 704

02/07/1996 MPF-3M Area A MAP/Actinides 86 0 0 1 0 LANL 1996–1997a 850

03/11/1996 MPF-20 NA MAP/Actinides 2 1 0 0 0 LANL 1996–1997b 479

03/15/1996 MPF-3M Area A MAP/Actinides 50 3 0 2 0 LANL 1996–1997b 553

03/26/1996 MPF-3M Area A MAP/Actinides 100 8 0 7 0 LANL 1996–1997b 765

03/26/1996 MPF-25 Aberdeen Steel MAP/Actinides 100 2 0 0 0 LANL 1996–1997b 835

04/05/1996 MPF-3M Area A MAP/Actinides 70 3 0 4 0 LANL 1996b 147

04/19/1996 MPF-3M Area A MAP/Actinides 100 1 0 0 0 LANL 1996b 381

04/24/1996 MPF-7 ILSA MAP/Actinides 60 10 2 2 0 LANL 1996b 475

04/30/1996 MPF-7 ILSA MAP/Actinides 42 6 0 1 0 LANL 1996b 569

05/03/1996 MPF-3M Area A MAP/Actinides 100 2 0 0 0 LANL 1996b 613

05/15/1996 MPF-3M Area A MAP/Actinides 70 1 0 4 0 LANL 1996b 259

05/25/1996 MPF-7 ER-1 MAP/Actinides 30 2 0 0 0 LANL 1996b 19

05/28/1996 MPF-3M Area A MAP/Actinides 100 1 0 1 0 LANL 1996c 87

05/31/1996 MPF-3M Area A MAP/Actinides 70 1 0 0 0 LANL 1996c 459

03/06/1997 984 IP MAP/Actinides 14 0 0 7 0 LANL 1997c 5

03/14/1997 MPF-3M Area A MAP/Actinides 90 3 0 0 0 LANL 1996–1997c 32

10/24/1997 MPF-7 ILTC MAP/[Actinides] 10 9 0 0 0 LANL 1997–1998b 326

11/06/1997 MPF-3M Area A MAP/Actinides 10 0 0 1 0 LANL 1997–1998b 278

07/01/1998 MPF-3M Area A MAP/Actinides 1 1 0 0 0 LANL 1998f 2

04/08/1999 MPF-7 ILTC MAP/[Actinides] 20 0 0 1 0 LANL 1999i 66

12/06/1999 MPF-30 ER-2 MAP/Actinides 100 6 0 1 0 LANL 1999j 92

12/14/1999 MPF-30 ER-2 MAP/Actinides 100 4 0 3 0 LANL 1999j 15

12/15/1999 MPF-7 Blue Room MAP/Actinides 20 12 0 7 0 LANL 1999j 8

01/13/2000 MPF-7 ER-1 MAP/Actinides 25 1 0 0 0 LANL 1999–2000c 78

02/03/2000 MPF-8 PSR MAP/[Actinides] 100 2 0 0 0 LANL 1999–2000c 280

04/18/2000 MPF-3M TOFI MAP/Actinides 99 1 0 0 0 LANL 2000f 217

08/30/2000 MPF-7 Blue Room MAP/Actinides 6 0 0 5 0 LANL 2000g 210

10/14/2000 MPF-25 Aberdeen Steel MAP/Actinides 100 8 0 0 0 LANL 2000g 603
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 0

0 Effective Date: 03/01/2022 Page 53 of 56

Date

Building 

number Location Primary source

Number 

of 

results

Exceeded 

lower 

limit 

alpha

Exceeded 

upper 

limit 

alpha

Exceeded 

lower 

limit beta

Exceeded 

upper 

limit beta Source Page

11/29/2000 MPF-1 Count Lab MAP/Actinides 30 1 0 0 0 LANL 2000g 391

12/12/2000 MPF-30 ER-2 MAP/MFP/Actinides 100 1 0 0 0 LANL 2000g 338

02/18/2003 MPF-7 ILSA MAP/Actinides 100 0 0 1 0 LANL 2003a 47

06/12/2003 MPF-7 ILSA MAP/Actinides 100 0 0 1 0 LANL 2003a 143

08/26/2003 MPF-7 ILSA MAP/Actinides 100 0 0 1 0 LANL 2003a 248

08/26/2003 MPF-7 ILSA MAP/Actinides 100 0 0 1 0 LANL 2003b 337

10/07/2003 MPF-3M Area A MAP/Actinides 95 1 0 0 0 LANL 2003b 175

07/02/2004 MPF-7 ILSA MAP/Actinides 100 0 0 1 0 LANL 2004g 120

12/16/2004 MPF-3M Staging Area Pu, U 100 2 0 1 0 LANL 2004g 21

12/18/2004 MPF-3M Area A MAP/Actinides 95 1 0 0 0 LANL 2004h 44

12/18/2004 MPF-7 ILSA MAP/Actinides 100 2 0 0 0 LANL 2004g 57

12/18/2004 MPF-7 LDN MAP/Actinides 92 1 0 0 0 LANL 2004g 210

a. IP = Isotope Production; LDN = Line D North; TOFI = time-of-flight isochronous spectrometer. 
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 0

0 Effective Date: 03/01/2022 Page 54 of 56

Table A-7. Air monitoring results exceeding airborne contamination limits, TA-53.

Date

Building 

number Location Primary source

Number of 

results

Exceeded limit 

alpha

Exceeded limit 

beta SRDB Page

01/02/1996 MPF-3M Area A MAP/Actinides 2 2 0 LANL 1996d 36

01/16/1996 MPF-3M Area A MAP/Actinides 2 2 0 LANL 1996d 30

01/20/1996 MPF-3M Area A MAP/Actinides 7 5 0 LANL 1996d 14

01/22/1996 MPF-7 1LTC MAP/Actinides 10 1 0 LANL 1996d 28

02/20/1996 MPF-3M Area A MAP/Actinides 3 2 0 LANL 1996d 12

02/20/1996 MPF-3M Area A MAP/Actinides 6 4 0 LANL 1996d 19

02/26/1996 MPF-7 1LTC MAP/Actinides 8 2 0 LANL 1996d 97

03/04/1996 MPF-7 1LTC MAP/Actinides 9 5 0 LANL 1996d 94

03/11/1996 MPF-3M Area A MAP/Actinides 7 4 0 LANL 1996d 90

03/22/1996 MPF-3M Area A MAP/Actinides 8 5 0 LANL 1996d 78

04/01/1996 MPF-3M Area A MAP/Actinides 3 3 0 LANL 1996d 85

04/09/1996 MPF-3M Area A MAP/Actinides 14 9 1 LANL 1996d 80

04/15/1996 MPF-3M Area A MAP/Actinides 7 1 0 LANL 1996d 65

04/15/1996 MPF-3M Area A MAP/Actinides 8 2 0 LANL 1996d 68

12/24/1996 MPF-3M Area A MAP/Actinides 9 3 0 LANL 1997d 40

12/30/1996 MPF-3M Area A MAP/Actinides 2 1 0 LANL 1997d 103

01/10/1997 MPF-3M Area A MAP/Actinides 19 3 0 LANL 1997d 52

01/13/1997 MPF-3M Area A MAP/Actinides 24 2 1 LANL 1997d 44

01/31/1997 MPF-3M Area A MAP/Actinides 15 1 0 LANL 1997d 56

02/10/1997 MPF-3M Area A MAP/Actinides 1 1 1 LANL 1997d 60

02/13/1997 MPF-3M Area A MAP/Actinides 17 2 0 LANL 1997d 66

02/20/1997 MPF-3M Area A MAP/Actinides 6 3 0 LANL 1997d 70

03/03/1997 MPF-3M Area A MAP/Actinides 10 5 0 LANL 1997d 75

03/03/1997 MPF-3M Area A MAP/Actinides 14 1 0 LANL 1997d 81

03/10/1997 MPF-3M Area A MAP/Actinides 8 1 0 LANL 1997d 84

03/17/1997 MPF-3M Area A MAP/Actinides 6 4 0 LANL 1997d 87

03/24/1997 MPF-3M Area A MAP/Actinides 5 4 0 LANL 1997d 90

04/03/1997 MPF-29 HRS MAP/Actinides 10 1 0 LANL 1997d 97

04/10/1997 MPF-3M Area A MAP/Actinides 5 1 0 LANL 1997d 101

04/21/1997 MPF-3M Area A MAP/Actinides 9 7 2 LANL 1997d 105

04/30/1997 MPF-7 ER-1 MAP/Actinides 7 1 0 LANL 1997d 113

05/26/1997 MPF-29 Not available MAP/Actinides 6 2 0 LANL 1997d 125

06/04/1997 MPF-29 Not available MAP/Actinides 8 2 0 LANL 1997d 132

06/13/1997 MPF-30 ER-2 MAP/Actinides 14 3 1 LANL 1997d 136

06/22/1997 MPF-29 Not available MAP/Actinides 9 1 0 LANL 1997d 139

06/27/1997 MPF-3M Area A MAP/Actinides 4 2 0 LANL 1997d 143
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 55 of 56

Date

Building 

number Location Primary source

Number of 

results

Exceeded limit 

alpha

Exceeded limit 

beta SRDB Page

07/20/1997 MPF-3M Area A MAP/Actinides410 LANL 1997d 153

08/15/1997 MPF-3M Area A MAP/Actinides 2110 LANL 1997d 161

08/25/1997 MPF-3M Area A MAP/Actinides 2001 LANL 1997d 164

09/03/1997 MPF-7 1LTC MAP/Actinides 1122 LANL 1997d 167

09/03/1997 MPF-3M Area A MAP/Actinides910 LANL 1997d 172

09/22/1997 MPF-3M Area A MAP/Actinides 1540 LANL 1997d 178

09/29/1997 MPF-3M Area A MAP/Actinides 2430 LANL 1997d 181

10/03/1997 MPF-3M Area A MAP/Actinides 3670 LANL 1997d 184

10/10/1997 MPF-3M Area A MAP/Actinides 3180 LANL 1997d 187

10/17/1997 MPF-3M Area A MAP/Actinides 34 160 LANL 1997d 190

10/27/1997 MPF-3M Area A MAP/Actinides 32 120 LANL 1997d 193

11/03/1997 MPF-3M Area A MAP/Actinides 34 221 LANL 1997d 196

11/07/1997 MPF-7 1LTC MAP/Actinides 19 121 LANL 1997d 199

11/17/1997 MPF-7 1LTC MAP/Actinides 2370 LANL 1997d 202

11/22/1997 MPF-7 1LTC MAP/Actinides 1170 LANL 1997d 205

11/25/1997 MPF-7 1LTC MAP/Actinides 3580 LANL 1997d 208

12/15/1997 MPF-3M Area A MAP/Actinides 2232 LANL 1997d 216

12/22/1997 MPF-3M Area A MAP/Actinides910 LANL 1997d 213

01/15/1998 MPF-3M Area A MAP/Actinides 1810 LANL 1998g 163

01/29/1998 MPF-3M Area A MAP/Actinides 2710 LANL 1998g 157

02/06/1998 MPF-7 1LTC MAP/Actinides 2510 LANL 1998g 154

02/13/1998 MPF-7 1LTC MAP/Actinides 1020 LANL 1998g 152

02/17/1998 MPF-3M Area A MAP/Actinides 3220 LANL 1998g 149

03/09/1998 MPF-7 1LTC MAP/Actinides 1530 LANL 1998g 143

03/12/1998 MPF-7 1LTC MAP/Actinides 1410 LANL 1998g 138

03/19/1998 MPF-7 1LTC MAP/Actinides 1120 LANL 1998g 136

04/10/1998 MPF-7 1LSA MAP/Actinides 2140 LANL 1998g 127

05/11/1998 MPF-7 1LSA MAP/Actinides 1520 LANL 1998g 116

05/18/1998 MPF-7 1LTC MAP/Actinides 1210 LANL 1998g 112

05/21/1998 MPF-3M Area A MAP/Actinides 1820 LANL 1998g 109

06/01/1998 MPF-3M Area A MAP/Actinides 2220 LANL 1998g 106

06/12/1998 MPF-3M Area A MAP/Actinides 1520 LANL 1998g 100

06/19/1998 MPF-3M Area A MAP/Actinides 2310 LANL 1998g 97

07/01/1998 MPF-3M Area A MAP/Actinides810 LANL 1998g 94

08/04/1998 MPF-3M Area A MAP/Actinides 1210 LANL 1998g 80

08/10/1998 MPF-3M Area A MAP/Actinides 1510 LANL 1998g 77

08/25/1998 MPF-3M Area A MAP/Actinides 1530 LANL 1998g 71

09/08/1998 MPF-3M Area A MAP/Actinides 1210 LANL 1998g 65
ATTACHMENT A 

SUPPORTING TABLES (continued)

Document No. ORAUT-RPRT-0101 Revision No. 00 Effective Date: 03/01/2022 Page 56 of 56

Date

Building 

number Location Primary source

Number of 

results

Exceeded limit 

alpha

Exceeded limit 

beta SRDB Page

11/03/1998 MPF-29 Not available MAP/Actinides 1010 LANL 1998g 43

09/8/1999 MPF-3M Area A MAP/Actinides650 LANL 1999j 100

09/14/1999 MPF-3M Area A MAP/Actinides 1010 LANL 1999j 98

09/20/1999 MPF-3M Area A MAP/Actinides510 LANL 1999j 96

11/05/1999 MPF-29 Not available MAP/Actinides 1510 LANL 1999j 61

11/08/1999 MPF-28 Not available MAP/Actinides630 LANL 1999j 66

11/22/1999 MPF-8 Not available MAP/Actinides 2040 LANL 1999j 56

11/27/1999 MPF-3M Area A MAP/Actinides910 LANL 1999j 49

12/06/1999 MPF-30 ER-2 MAP/Actinides 1530 LANL 1999j 32

12/08/1999 MPF-28 REB MAP/Actinides410 LANL 1999j 42

01/10/2000 MPF-7 ER-1 MAP/Actinides831 LANL 2000g 133

02/04/2000 MPF-30 ER-2 MAP/Actinides710 LANL 2000g 124

02/10/2000 MPF-7 ER-1 MAP/Actinides 2820 LANL 2000g 115

02/16/2000 MPF-7 ER-1 MAP/Actinides 3810 LANL 2000g 112

03/12/2000 MPF-7 ER-1 MAP/Actinides 1910 LANL 2000g 100

03/19/2000 MPF-7 ER-1 MAP/Actinides 2740 LANL 2000g 97

04/03/2000 MPF-28 Not available MAP/Actinides 3810 LANL 2000g 91

07/20/2000 Hot Zone Not available MAP/Actinides220 LANL 2000g 72

10/25/2004 MPF-7 1LSA MAP/Actinides210 LANL 2004i 52

11/01/2004 MPF-7 1LSA MAP/Actinides110 LANL 2004i 46

11/29/2004 MPF-7 1LSA MAP/Actinides110 LANL 2004i 37